Results 11 to 20 of about 37,164 (167)
Physical Review Research, 2021 The ratio between the shear viscosity and the entropy η/s is considered a universal measure of the strength of interactions in quantum systems. This quantity was conjectured to have a universal lower bound (1/4π)ℏ/k_{B}, which indicates a very strongly ...
Sang Wook Kim, Geo Jose, Bruno Uchoa
doaj +1 more source
Hydrodynamic Limit for Interacting Neurons [PDF]
Journal of Statistical Physics, 2014 This paper studies the hydrodynamic limit of a stochastic process describing the time evolution of a system with N neurons with mean-field interactions produced both by chemical and by electrical synapses. This system can be informally described as follows.
DE MASI, Anna +3 more
openaire +3 more sources
Thermal Boundaries in Kinetic and Hydrodynamic Limits [PDF]
, 2021 We investigate how a thermal boundary, modelled by a Langevin dynamics, affect the macroscopic evolution of the energy at different space-time scales.
Komorowski, Tomasz, Olla, Stefano
openaire +3 more sources
HYDRODYNAMIC LIMIT OF ORDER-BOOK DYNAMICS [PDF]
Probability in the Engineering and Informational Sciences, 2016 In this paper, we establish a fluid limit for a two-sided Markov order book model. The main result states that in a certain asymptotic regime, a pair of measure-valued processes representing the “sell-side shape” and “buy-side shape” of an order book converges to a pair of deterministic measure-valued processes in a certain sense.
Xuefeng Gao, S. J. Deng
openaire +3 more sources
Front dynamics in the XY chain after local excitations
SciPost Physics, 2020 We study the time evolution of magnetization and entanglement for initial states with local excitations, created upon the ferromagnetic ground state of the XY chain.
Viktor Eisler, Florian Maislinger
doaj +1 more source
Propagating density fluctuations in hydrodynamics and beyond
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2020 Density fluctuations in simple liquids are analysed in the context of three different and widely used formalisms, whose equivalence in the hydrodynamic limit is shown.
Stefano Cazzato +4 more
doaj +1 more source
The classical limit to a bipolar quantum hydrodynamic model of semiconductors in a bounded domain
上海师范大学学报. 自然科学版, 2015 We consider a one-dimensional bipolar isentropic quantum hydrodynamical model from semiconductor devices.First,we discuss the classical limit of the stationary solution.Then we discuss the classical limit of the non-stationary initial boundary problem ...
KONG Haiyue, LI Yeping
doaj +1 more source
Longitudinal sound and diffusion in holographic massive gravity
Journal of High Energy Physics, 2019 We consider a simple class of holographic massive gravity models for which the dual field theories break translational invariance spontaneously. We study, in detail, the longitudinal sector of the quasi-normal modes at zero charge density.
Martin Ammon +3 more
doaj +1 more source
Depth of strong development of karst based on quantitative factors of hydrodynamic conditions
地质科技通报, 2022 The hydrodynamic condition of groundwater vertical circulation is the main factor to control the development depth of karst.In order to explore the karst strong development depth under the multistage flow system in the anticline karst area of East ...
Hongyao Wu +3 more
doaj +1 more source
Hydrodynamic scaling limit of continuum solid-on-solid model
Journal of Applied Mathematics, 2006 A fourth-order nonlinear evolution equation is derived from a microscopic model for surface diffusion, namely, the continuum solid-on-solid model.
Anamaria Savu
doaj +1 more source