Results 51 to 60 of about 106,692 (280)

Fluctuation theorem between non-equilibrium states in an RC circuit

open access: yesNew Journal of Physics, 2015
Fluctuation theorems impose constraints on the probability of observing negative entropy production in small systems driven out of equilibrium. The range of validity of fluctuation theorems has been extensively tested for transitions between equilibrium ...
L Granger   +4 more
doaj   +1 more source

Entropy production of a closed Hamiltonian system via the detailed fluctuation relation

open access: yesPhysical Review Research, 2021
We revisit the problem of emergent irreversibility in a closed Hamiltonian system in light of the detailed fluctuation relation by invoking an imperfect Loschmidt demon that performs a time-reversal operation with a finite precision.
Yûto Murashita   +2 more
doaj   +1 more source

The exchange fluctuation theorem in quantum mechanics

open access: yes, 2009
We study the heat transfer between two finite quantum systems initially at different temperatures. We find that a recently proposed fluctuation theorem for heat exchange, namely the exchange fluctuation theorem [C. Jarzynski and D. K. Wojcik, Phys.
N. Hatano, S. Akagawa, Sevick
core   +1 more source

Fluctuation theorem in rachet system [PDF]

open access: yesJournal of Physics A: Mathematical and General, 2004
Fluctuation Theorem(FT) has been studied as far from equilibrium theorem, which relates the symmetry of entropy production. To investigate the application of this theorem, especially to biological physics, we consider the FT for tilted rachet system. Under, natural assumption, FT for steady state is derived.
openaire   +2 more sources

Microcanonical quantum fluctuation theorems [PDF]

open access: yesPhysical Review E, 2008
Previously derived expressions for the characteristic function of work performed on a quantum system by a classical external force are generalized to arbitrary initial states of the considered system and to Hamiltonians with degenerate spectra. In the particular case of microcanonical initial states explicit expressions for the characteristic function ...
Talkner, Peter   +2 more
openaire   +3 more sources

Design principles for enhancing phase sensitivity and suppressing phase fluctuations simultaneously in biochemical oscillatory systems

open access: yesNature Communications, 2018
Biochemical processes require both high sensitivity and low fluctuation which is incompatible with the fluctuation dissipation theorem. Here Fei et al. model biochemical oscillators to show how free energy dissipation leads to both a suppression of phase
Chenyi Fei   +3 more
doaj   +1 more source

Fluctuation Theorem for Partially-masked Nonequilibrium Dynamics

open access: yes, 2014
We establish a novel generalization of the fluctuation theorem for partially-masked nonequilibrium dynamics. We introduce a partial entropy production with a subset of all possible transitions, and show that the partial entropy production satisfies the ...
Sagawa, Takahiro, Shiraishi, Naoto
core   +1 more source

Using the fluctuation-dissipation theorem for nonconservative forces

open access: yesPhysical Review Research, 2019
An equilibrium system which is perturbed by an external potential relaxes to a new equilibrium state, a process obeying the fluctuation-dissipation theorem.
Kiryl Asheichyk, Matthias Krüger
doaj   +1 more source

Generalized Langevin equation and the fluctuation-dissipation theorem for particle-bath systems in a harmonic field

open access: yesResults in Physics, 2019
The generalized Langevin equation (GLE) is extended to the case when not only the tagged particle but also the surrounding bath particles respond to the external harmonic potential K(x).
Vladimír Lisý, Jana Tóthová
doaj   +1 more source

Tensor-network approaches to counting statistics for the current in a boundary-driven diffusive system

open access: yesNew Journal of Physics, 2022
We apply tensor networks to counting statistics for the stochastic particle transport in an out-of-equilibrium diffusive system. This system is composed of a one-dimensional channel in contact with two particle reservoirs at the ends.
Jiayin Gu, Fan Zhang
doaj   +1 more source

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