Results 31 to 40 of about 1,013 (253)

Fluctuation-Dissipation Theorems for Multiphase Flow in Porous Media

open access: yesEntropy, 2021
A thermodynamic description of porous media must handle the size- and shape-dependence of media properties, in particular on the nano-scale. Such dependencies are typically due to the presence of immiscible phases, contact areas and contact lines.
Dick Bedeaux, Signe Kjelstrup
doaj   +1 more source

Stochastic thermodynamics and fluctuation theorems for non-linear systems

open access: yesNew Journal of Physics, 2021
We extend stochastic thermodynamics by relaxing the two assumptions that the Markovian dynamics must be linear and that the equilibrium distribution must be a Boltzmann distribution.
Jan Korbel, David H Wolpert
doaj   +1 more source

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

Jarzyski’s Equality and Crooks’ Fluctuation Theorem for General Markov Chains with Application to Decision-Making Systems

open access: yesEntropy, 2022
We define common thermodynamic concepts purely within the framework of general Markov chains and derive Jarzynski’s equality and Crooks’ fluctuation theorem in this setup.
Pedro Hack   +2 more
doaj   +1 more source

Fluctuation theorem and chaos [PDF]

open access: yesThe European Physical Journal B, 2008
The heat theorem (i.e. the second law of thermodynamics or the existence of entropy) is a manifestation of a general property of hamiltonian mechanics and of the ergodic Hypothesis. In nonequilibrium thermodynamics of stationary states the chaotic hypothesis plays a similar role: it allows a unique determination of the probability distribution (called {
openaire   +4 more sources

Quasiprobability Distribution for Heat Fluctuations in the Quantum Regime

open access: yesPRX Quantum, 2020
The standard approach to deriving fluctuation theorems fails to capture the effect of quantum correlation and coherence in the initial state of the system.
Amikam Levy, Matteo Lostaglio
doaj   +1 more source

Nucleic Acid Thermodynamics Derived from Mechanical Unzipping Experiments

open access: yesLife, 2022
Force-spectroscopy techniques have led to significant progress in studying the physicochemical properties of biomolecules that are not accessible in bulk assays. The application of piconewton forces with laser optical tweezers to single nucleic acids has
Paolo Rissone, Felix Ritort
doaj   +1 more source

Nonequilibrium fluctuation theorems from equilibrium fluctuations

open access: yesNew Journal of Physics, 2013
A system can be driven to nonequilibrium behavior in the presence of thermodynamic imbalances in its environment, such as temperature or chemical potential differences.
Saar Rahav, Christopher Jarzynski
doaj   +1 more source

White-noise fluctuation theorem for Langevin dynamics

open access: yesNew Journal of Physics, 2022
Fluctuation theorems (FTs) based on time-reversal have provided remarkable insight into the non-equilibrium statistics of thermodynamic quantities like heat, work, and entropy production.
M Innerbichler   +4 more
doaj   +1 more source

Quantum fluctuation theorems and power measurements

open access: yesNew Journal of Physics, 2015
Work in the paradigm of the quantum fluctuation theorems of Crooks and Jarzynski is determined by projective measurements of energy at the beginning and end of the force protocol.
B Prasanna Venkatesh   +2 more
doaj   +1 more source

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