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Dissipative hydrodynamical equations for superfluid-normal-fluid mixtures 认领 引用
1
作者 Liang Tong Yu Chen 《Communications in Theoretical Physics》 SCIE CAS CSCD 2026年第5期33-49,共17页
The growing demand to understand non-equilibrium dynamics in open quantum many-body systems-motivated by progress in quantum simulation and error correction-requires theoretical frameworks that avoid the exponential s... The growing demand to understand non-equilibrium dynamics in open quantum many-body systems-motivated by progress in quantum simulation and error correction-requires theoretical frameworks that avoid the exponential scaling of the full density matrix.In this work,we develop a first-principles approach to the dissipative hydrodynamical equations of a finite-temperature superfluid.We show that dominant external dissipation not only simplifies the description of intrinsic damping(Beliaev and Landau)but also stabilizes a hydrodynamic formulation.Starting from a density-matrix method aligned with the Zaremba-Nikuni-Griffin formalism,a closed set of dissipative quantum Liouville equations(DQLE)can be obtained.We then introduce a systematic hydrodynamic expansion beyond the conventional Wigner transform,yielding a closed set of dissipative hydrodynamic equations(DHE).Through detailed comparison with the full DQLE,we demonstrate that retaining only the zeroth-order term in the expansion of the anomalous density matrix offers the most accurate and stable DHE implementation,in close agreement with the DQLE under strong dissipation and weak interaction.Our results establish a stabilized hydrodynamic theory for dissipative quantum fluids and significantly reduce the computational complexity of modeling open many-body dynamics. 展开更多
关键词 quantum dissipative system hydrodynamics dissipative response theory superfluid-normal-fluidmixture
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Dissipative soliton operation in a mode-locked laser based on thulium-doped fiber 认领 引用
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作者 Wen-Yan Zhang Lei Zheng +4 位作者 Tian Zhang Nan-Nan Liu Li-Jie Geng Kun Yang Li Zhan 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期404-410,共7页
We report a dissipative soliton laser utilizing thulium-doped fiber as the saturable absorber.By adjusting the polarization controller and pump power,a stable fundamental dissipative pulse has been successfully achiev... We report a dissipative soliton laser utilizing thulium-doped fiber as the saturable absorber.By adjusting the polarization controller and pump power,a stable fundamental dissipative pulse has been successfully achieved,featuring a center wavelength of 1565.88 nm,a 3-dB bandwidth of 1.20 nm,a repetition frequency of 36.9 MHz,and a signal-to-noise ratio of 64 dB.Combined the gradual increase of the pump power with the intracavity polarization optimization,the spectral morphology evolves into a parabolic shape,Π-shape,and M-shape.Moreover,through increasing the gain,multiple dissipative pulses include dissipative soliton pairs and triples are manifested because of the peak power clamping effect.The repetition frequencies are 73.8 MHz and 110.7 MHz,respectively,with signal-to-noise ratios both more than 60 dB,indicating that the constructed dissipative soliton laser has excellent stability.This study not only enhances the understanding of the nonlinear dynamic process of dissipative soliton generation,but also offers a novel approach for designing ultrafast lasers characterized by high stability and an all-fiber structure. 展开更多
关键词 mode-locked fiber laser thulium-doped fiber pulsed laser dissipative soliton
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Stabilizing Rogue Waves in a Driven-Dissipative Nonlinear System 认领 引用
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作者 Chao Hang Guoxiang Huang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期93-98,共6页
The study of rogue waves(RWs)is currently an active multidisciplinary research area,encompassing oceanography,hydrodynamics,optics,plasma physics,Bose–Einstein condensation,and others.RWs are often modeled using Pere... The study of rogue waves(RWs)is currently an active multidisciplinary research area,encompassing oceanography,hydrodynamics,optics,plasma physics,Bose–Einstein condensation,and others.RWs are often modeled using Peregrine solitons or Kuznetsov–Ma breathers,which,however,have recently been shown to be dynamically unstable.Investigating the stability of RWs has now become an intriguing and important topic,not only for fundamental scientific interest but also for practical applications.Here,we propose a scheme for stabilizing RWs by utilizing external driving and dissipation in a nonlinear system governed by the Lugiato–Lefever equation.We find that RW instability can be completely suppressed through multistability,together with a dual balance between dispersion and nonlinearity and between driving and dissipation.We also elucidate the stability diagram of RWs in the parameter space of detuning and driving intensity,and demonstrate that RWs may exhibit different propagation dynamics in different regions of this parameter space.The scheme presented here can be extended to stabilize other nonlinearly localized structures with nonzero backgrounds in various driven-dissipative nonlinear systems. 展开更多
关键词 kuznetsov ma breatherswhichhoweverhave physicsbose einstein condensationand Kuznetsov Ma breathers external driving dissipation peregrine solitons rogue waves stability
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Breathing dynamics of dissipative pure quartic soliton molecules via spectral filtering effects 认领 引用
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作者 Chun-Ting Liu Jun-You Lu +1 位作者 Han-Yang Shen Zu-Xing Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第3期320-327,共8页
Although dissipative pure quartic solitons(DPQSs)stabilized by fourth-order dispersion(FOD)and nonlinearity are widely studied,their multi-soliton dynamics in positive FOD remain underexplored.Here,we study the impact... Although dissipative pure quartic solitons(DPQSs)stabilized by fourth-order dispersion(FOD)and nonlinearity are widely studied,their multi-soliton dynamics in positive FOD remain underexplored.Here,we study the impact of saturation energy and filter bandwidth on breathing DPQS molecules numerically.Our findings indicate that complementary breathing DPQS molecules exchange energy through oscillating tails,exhibiting simultaneously temporal oscillations and spectral shifting.By adjusting cavity parameters,we demonstrate that the state of breathing soliton molecules is inherently governed by time separation.These findings deepen the comprehension of multi-soliton interactions and nonlinear phenomena. 展开更多
关键词 dissipative pure-quartic soliton soliton molecule breathing soliton oscillating tails
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Extended Dissipative Observer-Based Plug-and-Play Control for Large-Scale Interconnected Systems 认领 引用
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作者 Xiaohui Hu Chen Peng +1 位作者 Hao Shen Engang Tian 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2025年第11期2207-2217,共11页
In this study,a novel observer-based scalable control scheme for large-scale systems(LSSs)with several interconnected subsystems is explored.Firstly,a scalable observer-based controller is designed to address complex ... In this study,a novel observer-based scalable control scheme for large-scale systems(LSSs)with several interconnected subsystems is explored.Firstly,a scalable observer-based controller is designed to address complex situations where system states are difficult to measure directly.Secondly,unlike the limited cascade and ring topology connections in previous results,this study considers a universal arbitrary topology.Furthermore,it is noteworthy that the plug-and-play(PnP)capability of LSSs is guaranteed thanks to the proposed scalable scheme.Specifically,when subsystems are added or removed,only the controller gains of directly connected neighbors need updating,eliminating the need to redesign the entire system.Moreover,by choosing a Lyapunov-Krasovskii function with a quadratic matrix-valued polynomial,sufficient conditions are deduced to guarantee the global exponential stability with the desired extended dissipative performance for the resulting LSSs.Finally,the effectiveness of the employed scheme is verified by numerical and microgrid examples. 展开更多
关键词 Extended dissipative performance islanded microgrid large-scale systems(LSSs) observer-based scalable control
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A Cyclic Elastoplastic Constitutive Model Based on Dissipative Plastic Energy 认领 引用
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作者 Wenjie Zhao Xuehong Ren +1 位作者 Jiujian Wang Shaopu Yang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2025年第5期789-802,共14页
In the framework of elastoplastic theory,by introducing dissipative plastic energy(instead of cumulative plastic strain)and dissipative plastic energy rate(instead of cumulative plastic strain rate)into the ratchettin... In the framework of elastoplastic theory,by introducing dissipative plastic energy(instead of cumulative plastic strain)and dissipative plastic energy rate(instead of cumulative plastic strain rate)into the ratchetting parameter evolution equation and isotropic evolution rules respectively,a cyclic elastoplastic constitutive model based on dissipative plastic energy is established.This model,termed the WDP model,describes the physical meaning and evolution rule of the unclosed stress–strain hysteresis loop using an energy method.A comparison of numerical implementation results with experimental data demonstrates the capability of the WDP model to predict the cyclic deformation of EA4T steel,effectively capturing the cyclic softening characteristics and ratchetting behaviors of axle steel EA4T. 展开更多
关键词 Elastoplastic constitutive model Dissipative plastic energy Cyclic softening characteristics Ratchetting behaviors Numerical implementation
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Erratum to:The effect of typical seawater cations on the adhesion of mussel protein Mefp-1 based on dissipative quartz crystal microbalance 认领 引用
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作者 Futao ZHANG Chengjun SUN +3 位作者 Linqing XIE Fuqian LI Fenghua JIANG Jingxi LI 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2025年第1期341-341,共1页
Erratum to:http://gffzzd3cc09b8251d45dfsovfwx0wnuub5605q.ffgz.tsg.suse.edu.cn/10.1007/s 00343-024-4040-x In this article,the Fig.2 b contained a few mistakes.The figure below shows the wrong on e.The figure should have appeared as shown below.
关键词 quartz seawater dissipative
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Wave Propagation and Chaotic Behavior in Conservative and Dissipative Sawada-Kotera Models 认领 引用
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作者 Nikolai A.Magnitskii 《Fluid Dynamics & Materials Processing》 EI 2025年第7期1529-1544,共16页
This paper presents both analytical and numerical studies of the conservative Sawada-Kotera equation and its dissipative generalization,equations known for their soliton solutions and rich chaotic dynamics.These model... This paper presents both analytical and numerical studies of the conservative Sawada-Kotera equation and its dissipative generalization,equations known for their soliton solutions and rich chaotic dynamics.These models offer valuable insights into nonlinear wave propagation,with applications in fluid dynamics and materials science,including systems such as liquid crystals and ferrofluids.It is shown that the conservative Sawada-Kotera equation supports traveling wave solutions corresponding to elliptic limit cycles,as well as two-and three-dimensional invariant tori surrounding these cycles in the associated ordinary differential equation(ODE)system.For the dissipative generalized Sawada-Kotera equation,chaotic wave behavior is observed.The transition to chaos in the corresponding ODE systemfollows a universal bifurcation scenario consistent with the framework established by FShM(Feigenbaum-Sharkovsky-Magnitskii)theory.Notably,this study demonstrates for the first time that the conservative Sawada-Kotera equation can exhibit complex quasi-periodic wave solutions,while its dissipative counterpart admits an infinite number of stable periodic and chaotic waveforms. 展开更多
关键词 Nonlinear partial differential equations Sawada-Kotera equations conservative and dissipative systems cycles and tori chaotic dynamics singular attractors FShM theory
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Numerical Simulation via Homotopy Perturbation Approach of a Dissipative Squeezed Carreau Fluid Flow Due to a Sensor Surface 认领 引用
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作者 Sara I.Abdelsalam W.Abbas +2 位作者 Ahmed M.Megahed Hassan M.H.Sadek M.S.Emam 《Frontiers in Heat and Mass Transfer》 EI CAS 2025年第5期1511-1527,共17页
This study rigorously examines the interplay between viscous dissipation,magnetic effects,and thermal radiation on the flow behavior of a non-Newtonian Carreau squeezed fluid passing by a sensor surface within a micro... This study rigorously examines the interplay between viscous dissipation,magnetic effects,and thermal radiation on the flow behavior of a non-Newtonian Carreau squeezed fluid passing by a sensor surface within a micro cantilever channel,aiming to deepen our understanding of heat transport processes in complex fluid dynamics scenarios.The primary objective is to elucidate how physical operational parameters influence both the velocity of fluid flow and its temperature distribution,utilizing a comprehensive numerical approach.Employing a combination of mathematical modeling techniques,including similarity transformation,this investigation transforms complex partial differential equations into more manageable ordinary ones,subsequently solving them using the homotopy perturbation method.By analyzing the obtained solutions and presenting them graphically,alongside detailed analysis,the study sheds light on the pivotal role of significant parameters in shaping fluid movement and energy distribution.Noteworthy observations reveal a substantial increase in fluid velocity with escalating magnetic parameters,while conversely,a contrasting trend emerges in the temperature distribution,highlighting the intricate relationship between magnetic effects,flow dynamics,and thermal behavior in non-Newtonian fluids.Further,the suction velocity enhance both the local skin friction and Nusselt numbers,whereas theWeissenberg number reduces them,opposite to the effect of the power-law index. 展开更多
关键词 Homotopy perturbation method squeezed flow Carreau fluid sensor surface magnetic field viscous dissipation
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Temperature effect on dissipative holographic screening-photovoltaic solitons in a biased dissipative system 认领 引用 被引量：1
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作者 刘时雄 刘劲松 +2 位作者 蔡欣 樊婷 张光勇 《Chinese Physics B》 SCIE EI CAS 2008年第10期3771-3778,共8页
In a biased dissipative photovoltaic-photorefractive system, this paper investigates the temperature effect on the evolution and the self-deflection of the dissipative holographic screening-photovoltaic （DHSP） solit... In a biased dissipative photovoltaic-photorefractive system, this paper investigates the temperature effect on the evolution and the self-deflection of the dissipative holographic screening-photovoltaic （DHSP） solitons. The results reveal that, the evolution and the self-deflection of the bright and dark DHSP solitons are influenced by the system temperature. At a given temperature, for a stable DHSP soliton originally formed in the dissipative system, it attempts to evolve into another DHSP soliton when the temperature change is appropriately small, whereas it will become unstable or break down if the temperature departure is large enough. Moreover, the self-deflection degree of the solitary beam centre increases as temperature rises in some range, while it is decided by the system parameters and is slight under small-signal condition. The system temperature can be adjusted to change the formation and the self-deflection of the solitary beam in order to gain certain optical ends. In a word, the system temperature plays a role for the DHSP solitons in the dissipative system. 展开更多
关键词 dissipative holographic screening-photovoltaic solitons temperature effect dissipative system
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The effect of typical seawater cations on the adhesion of mussel protein Mefp-1 based on dissipative quartz crystal microbalance 认领 引用
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作者 Futao ZHANG Chengjun SUN +3 位作者 Linqing XIE Fuqian LI Fenghua JIANG Jingxi LI 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2025年第1期274-285,共12页
Mussels are common anchoring organisms that adhere to the surfaces of various substrates with their byssus.The adhesion of mussel to substrates is contingent upon the presence of mussel foot proteins,of which Mytilus ... Mussels are common anchoring organisms that adhere to the surfaces of various substrates with their byssus.The adhesion of mussel to substrates is contingent upon the presence of mussel foot proteins,of which Mytilus edulis foot protein-1(Mefp-1)has been identified as the most abundant protein.It has been found that lipids are involved in the mussel adhesion process and can facilitate Mefp-1adhesion.In this research,the adhesion behavior of Mefp-1 on various substrate surfaces under the effect of typical seawater cations with or without the presence of lipid were investigated using a quartz crystal microbalance with dissipation(QCM-D).Results indicate that the presence of cations Ca2+,Mg2+,Na+,and K+leads to varying degrees of reduction in the adhesion performance of Mefp-1 on different substrates.The degree of this reduction,however,was much alleviated in the presence of palmitic acid,which is involved in the mussel adhesion process.Therefore,the involvement of palmitic acid is advantageous for mussel protein adhesion to the substrate surface in the marine environment.This study illustrated the significant contribution of palmitic acid to mussel adhesion,which can help to better understand biofouling mechanisms and develop biomimetic adhesive materials. 展开更多
关键词 mussel adhesion quartz crystal microbalance with dissipation(QCM-D) typical seawater cations palmitic acid Mefp-1
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Role of Thermal Radiation Effect on Unsteady Dissipative MHD Mixed Convection of Hybrid Nanofluid over an Inclined Stretching Sheet with Chemical Reaction 认领 引用
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作者 Shaik Mohammed Ibrahim Bhavanam Naga Lakshmi +1 位作者 Chundru Maheswari Hasan Koten 《Frontiers in Heat and Mass Transfer》 EI CAS 2025年第5期1555-1574,共20页
Magnetohydrodynamic(MHD)radiative chemically reactive mixed convection flow of a hybrid nanofluid(Al2O3–Cu/H2O)across an inclined,porous,and stretched sheet is examined in this study,along with its unsteady ... Magnetohydrodynamic(MHD)radiative chemically reactive mixed convection flow of a hybrid nanofluid(Al2O3–Cu/H2O)across an inclined,porous,and stretched sheet is examined in this study,along with its unsteady heat and mass transport properties.The hybrid nanofluid’s enhanced heat transfer efficiency is a major benefit in high-performance engineering applications.It is composed of two separate nanoparticles suspended in a base fluid and is chosen for its improved thermal properties.Thermal radiation,chemical reactions,a transverse magnetic field,surface stretching with time,injection or suction through the porous medium,and the effect of inclination,which introduces gravity-induced buoyancy forces,are all important physical phenomena that are taken into account in the analysis.A system of nonlinear ordinary differential equations(ODEs)is derived from the governing partial differential equations for mass,momentum,and energy by applying suitable similarity transformations.This simplifies the modeling procedure.The bvp4c solver in MATLAB is then used to numerically solve these equations.Different governing parameters modify temperature,concentration,and velocity profiles in graphs and tables.These factors include radiation intensity,chemical reaction rate,magnetic field strength,unsteadiness,suction/injection velocity,inclination angle,and nanoparticle concentration.A complex relationship between buoyancy and magnetic factors makes hybrid nanofluids better at heat transmission than regular ones.Thermal systems including cooling technologies,thermal coatings,and electronic heat management benefit from these findings. 展开更多
关键词 Hybrid nanofluid viscous dissipation MHD thermal radiation chemical reaction inclined stretching sheet
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Quantum Squeezing Effects of a Non-dissipative Mesoscopic Circuit with Coupled Inductors and Capacitors 认领 引用 被引量：34
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作者 LEI Min-Sheng JI Ying-Hua XIE Fang-Sen 《Chinese Physics Letters》 SCIE EI CAS 2001年第2期163-165,共3页
The quantum fluctuations of the charge and current in a non-dissipative mesoscopic circuit with coupled inductors and capacitors are studied for the squeezed vacuum state.The influence of the phase angle upon the quan... The quantum fluctuations of the charge and current in a non-dissipative mesoscopic circuit with coupled inductors and capacitors are studied for the squeezed vacuum state.The influence of the phase angle upon the quantum fluctuations is discussed in particular.Our results indicate that when the circuit parameters remain constant and the phasesθof the two circuits are equal,the squeezing of the charge or its conjugate variable increases.When the difference of the two phases equalsπ,the squeezing will deteriorate.Therefore,if we want to decrease the quantum noise,we should not only control the amplitude r,but also control the phaseθcarefully. 展开更多
关键词 state dissipative quantum
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Interaction Time Study of the Dissipative Process in the Reaction 19F+45Sc 认领 引用 被引量：10
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作者 WANG Qi LI Songlin +9 位作者 LU Jun XU Hushan YIN Xu FAN Enjie GUO Zhongyan ZHU Yongtai XIE Yuanxiang LI Zhichang LU Xiuqin HU Xiaoqing 《Chinese Physics Letters》 SCIE CAS 1993年第11期656-659,共4页
Excitation functions have been measured for the dissipative products of 4≤Z≤12 in 19F+45Sc reaction from 102 to 108MeV by a step of 300keV at θl=42°.The energy coherence widths have been extracted and... Excitation functions have been measured for the dissipative products of 4≤Z≤12 in 19F+45Sc reaction from 102 to 108MeV by a step of 300keV at θl=42°.The energy coherence widths have been extracted and the dinuclear system lifetimes of the order of 10^(-21 ) s have been deduced by analysing the cross section Auctuations. 展开更多
关键词 dinuclear dissipative
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Collision Dynamics of Dissipative Matter-Wave Solitons in a Perturbed Optical Lattice 认领 引用 被引量：3
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作者 周政 钟宏华 +3 位作者 朱博 肖发新 朱科 谭金桃 《Chinese Physics Letters》 SCIE EI CAS CSCD 2016年第11期13-17,共5页
We investigate the stability and collision dynamics of dissipative matter-wave solitons formed in a quasi-one- dimensional Bose-Einstein condensate with linear gain and three-body recombination loss perturbed by a wea... We investigate the stability and collision dynamics of dissipative matter-wave solitons formed in a quasi-one- dimensional Bose-Einstein condensate with linear gain and three-body recombination loss perturbed by a weak optical lattice. It is shown that the linear gain can modify the stability of the single dissipative soliton moving in the optical lattice. The collision dynamics of two individual dissipative matter-wave solitons explicitly depend on the linear gain parameter, and they display different dynamical behaviors in both the in-phase and out-of-phase interaction regimes. 展开更多
关键词 of on it in Collision Dynamics of Dissipative Matter-Wave Solitons in a Perturbed Optical Lattice that is
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Computational Stability of the Explicit Difference Schemes of the Forced Dissipative Nonlinear Evolution Equations 认领 引用 被引量：6
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作者 林万涛 季仲贞 王斌 《Advances in Atmospheric Sciences》 SCIE CAS 2001年第3期413-417,共5页
The computational stability of the explicit difference schemes of the forced dissipative nonlinear evolution equations is analyzed and the computational quasi-stability criterion of explicit difference schemes of the ... The computational stability of the explicit difference schemes of the forced dissipative nonlinear evolution equations is analyzed and the computational quasi-stability criterion of explicit difference schemes of the forced dissipative nonlinear atmospheric equations is obtained on account of the concept of computational quasi-stability, Therefore, it provides the new train of thought and theoretical basis for designing computational stable difference scheme of the forced dissipative nonlinear atmospheric equations. Key words Computational quasi-stability - Computational stability - Forced dissipative nonlinear evolution equation - Explicit difference scheme This work was supported by the National Outstanding Youth Scientist Foundation of China (Grant No. 49825109), the Key Innovation Project of Chinese Academy of Sciences (KZCX1-10-07), the National Natural Science Foundation of China (Grant Nos, 49905007 and 49975020) and the Outstanding State Key Laboratory Project (Grant No. 40023001). 展开更多
关键词 Computational quasi-stability Computational stability Forced dissipative nonlinear evolution equation Explicit difference scheme
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A Novel Application of Multi-Resonant Dissipative Elastic Metahousing for Bearings 认领 引用 被引量：4
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作者 Muhammad C.W.Lim N.S.Vyas 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2021年第4期449-465,共17页
Bearing as an important machine element is widely used for industrial and automotive applications.At certain operational speed,bearings induce disturbing vibrations and noises that affect machine service life,producti... Bearing as an important machine element is widely used for industrial and automotive applications.At certain operational speed,bearings induce disturbing vibrations and noises that affect machine service life,productivity and passenger comfort in case of vehicle applications.Dissipative elastic metamaterials have caught considerable attention of scientific community due to their effective medium properties and peculiar dynamic characteristics including frequency bandgaps that can be effectively applied to attenuate and control undesirable vibration and noises.Although a substantial amount of theoretical work for effective medium characteristics and dynamic properties of acoustic/elastic metamaterials has been reported,the practical design and application of these composite structures for real-life engineering problems still remain unexplored.The present study intends to investigate a potential application of dissipative elastic metamaterials in controlling the bearing-generated vibration and noises over an ultrawide frequency range.The study is based on a simple analytical model together with rigorous finite element numerical simulations.It has been established that the dissipative characteristic of resonant system caused by larger material mismatch broadens the local resonance bandgaps beyond the bounding resonance frequency at the cost of wave transmission.In order to achieve broadband vibration and noise control,multi-resonant composite structures are embedded inside the bearing housing in five different layers.The reported results revealed the presence of broadband wave attenuation zone distributed from 3 to 52 kHz with consideration of material damping.The bearing-generated vibration and noises lying inside the wave attenuation zone will be mitigated.This feasibility study provides a new concept for the design and application of acoustic/elastic metamaterials in the bearing industry to improve machine service life and to enhance productivity and passenger comfort. 展开更多
关键词 Bearing metahousing Dissipative elastic metamaterials Frequency Local resonance bandgap Vibration attenuation zone
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Quankum Effects of a Dissipative Mesoscopic Circuit with Mutual Inductance 认领 引用 被引量：10
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作者 JIYing－Hua NIEYi－You 《Communications in Theoretical Physics》 SCIE CAS 2002年第3期346-348,共3页
We study the quantum fluctuations of the charge and current of two L-C dissipative mesoscopic circuit with the mutual inductance in the vacuum state.Our results show that the system state will evolve to a squeezed coh... We study the quantum fluctuations of the charge and current of two L-C dissipative mesoscopic circuit with the mutual inductance in the vacuum state.Our results show that the system state will evolve to a squeezed coherent state under the effect of external source.We find that the squeezing amplitude parameter is relative to the parameters of circuit and the mutual-inductance coefficient in the existence of dissipation.When the circuit has no dissipation or there is complete coupling between two meshes,the squeezing amplitude parameter only depends on the capacitance's ratio. 展开更多
关键词 dissipative mesoscopic circuit quantum fluctuation mutual inductance squeezing amplitude parameter
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Propagation of Shear Waves Generated by Acoustic Radiation Force in Nondissipative Inhomogeneous Media 认领 引用 被引量：2
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作者 LU Ming-Zhu LIU Xue-Jin +3 位作者 SHI Yu KANG Yan-Ni GUAN Yu-Bo WAN Ming-Xi 《Chinese Physics Letters》 SCIE EI CAS CSCD 2012年第1期164-167,共4页
We concentrate on the nondissipative mechanism induced shear wave in inhomogenous tissue.The shear wave equation of radiation force in inhomogeneous media is solved numerically with a finite-difference time-domain met... We concentrate on the nondissipative mechanism induced shear wave in inhomogenous tissue.The shear wave equation of radiation force in inhomogeneous media is solved numerically with a finite-difference time-domain method.A rarely studied nondissipative mechanism of shear displacement due to a smooth medium inhomogeneity is evaluated.It is noted that unlike the dissipative effect,the nondissipative action on a localized inhomogeneity with its hardness parameter changing smoothly along the beam axis,compresses or stretches the focus area.The shear waves in nondissipative inhomogeneous media remain the property of sharp turn with 100% peak positive displacement and 64% peak negative displacement.This action is useful in discerning the water-like lesion. 展开更多
关键词 method. dissipative inhomogeneous
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Dissipative Particle Dynamics Simulations of Domain Growth and Phase Separation in Binary Immiscible Fluids 认领 引用 被引量：3
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作者 Ying Zhao Hong Liu +1 位作者 Zhong-yuan Lu Chia-chung Sun 《Chinese Journal of Chemical Physics》 SCIE EI CAS 北大核心 2008年第5期451-456,共6页
It was investigated that the domain growth processes of spinodal decomposition with different quenching depth in two and three dimensional binary immiscible fluids by using parallel dissipative particle dynamics simul... It was investigated that the domain growth processes of spinodal decomposition with different quenching depth in two and three dimensional binary immiscible fluids by using parallel dissipative particle dynamics simulations. In two dimensions, the dynamic scaling exponent 1/2 for coalescence and 2/3 for inertial regimes in the shallow quench and strong finite size effects in the cases of deep quenching were obtained. In three dimensions, it was used that the diffusive regime with exponent n=l/3 in the shallow quench and the inertial hydrodynamic regime with n=2/3 for different quenches. The viscous effects are not clearly reflected, showing n=1/2 in both shallow and deep quenches in this time period, due to the soft nature of interaction potential adopted in dissipative particle dynamics. 展开更多
关键词 Dissipative particle dynamics Binary immiscible fluids Domain growth
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