Results 21 to 30 of about 267,886 (283)

Using a quantum work meter to test non-equilibrium fluctuation theorems [PDF]

open access: yesNature Communications, 2017
Defining and measuring work and heat are non-trivial tasks in the quantum regime. Here, the authors design a scheme to directly sample from the work probability distribution, and use it to verify the validity of the quantum version of the Jarzynksi ...
Federico Cerisola   +5 more
doaj   +2 more sources

General relativistic fluctuation theorems

open access: yesPhysics Letters B
Using the recently proposed covariant framework of general relativistic stochastic mechanics and stochastic thermodynamics, we proved the detailed and integral fluctuation theorems in curved spacetime.
Yifan Cai, Tao Wang, Liu Zhao
doaj   +3 more sources

Fluctuation theorems, quantum channels and gravitational algebras [PDF]

open access: yesJournal of High Energy Physics
In this note we study nonequilibrium fluctuations in gravitational algebras within de Sitter space. An essential aspect of this study is quantum measurement theory, which allows us to access the dynamical fluctuations of observables via a two-point ...
Michele Cirafici
doaj   +2 more sources

Work as an external quantum observable and an operational quantum work fluctuation theorem

open access: yesPhysical Review Research, 2020
We propose a definition of externally measurable quantum work in driven systems. Work is given as a quantum observable on a control device which is forcing the system and can be determined without knowledge of the system Hamiltonian H[over ̂]_{S}.
Konstantin Beyer   +2 more
doaj   +2 more sources

Quantum algorithms from fluctuation theorems: Thermal-state preparation [PDF]

open access: yesQuantum, 2022
Fluctuation theorems provide a correspondence between properties of quantum systems in thermal equilibrium and a work distribution arising in a non-equilibrium process that connects two quantum systems with Hamiltonians $H_0$ and $H_1=H_0+V$.
Zoe Holmes   +4 more
doaj   +1 more source

Large deviations and fluctuation theorems for cycle currents defined in the loop-erased and spanning tree manners: A comparative study

open access: yesPhysical Review Research, 2023
The cycle current is a crucial quantity in stochastic thermodynamics. The absolute and net cycle currents of a Markovian system can be defined in the loop-erased (LE) or spanning tree (ST) manner.
Yuhao Jiang, Bingjie Wu, Chen Jia
doaj   +1 more source

Crooks Fluctuation Theorem for Single Polymer Dynamics in Time-Dependent Flows: Understanding Viscoelastic Hysteresis

open access: yesEntropy, 2021
Nonequilibrium work relations have fundamentally advanced our understanding of molecular processes. In recent years, fluctuation theorems have been extensively applied to understand transitions between equilibrium steady-states, commonly described by ...
Yuecheng Zhou   +2 more
doaj   +1 more source

Extension of the Fluctuation Theorem [PDF]

open access: yesPhysical Review Letters, 2003
Heat fluctuations are studied in a dissipative system with both mechanical and stochastic components for a simple model: a Brownian particle dragged through water by a moving potential. An extended stationary state fluctuation theorem is derived. For infinite time, this reduces to the conventional fluctuation theorem only for small fluctuations; for ...
van Zon, R., Cohen, E. G. D.
openaire   +3 more sources

Hydrodynamics and the Fluctuation Theorem [PDF]

open access: yesPhysical Review Letters, 2011
4 pages, 3 figures, to appear on Physical Review ...
M. Belushkin, LIVI, ROBERTO, G. Foffi
openaire   +6 more sources

A topological fluctuation theorem

open access: yesNature Communications, 2022
AbstractFluctuation theorems specify the non-zero probability to observe negative entropy production, contrary to a naive expectation from the second law of thermodynamics. For closed particle trajectories in a fluid, Stokes theorem can be used to give a geometric characterization of the entropy production.
Mahault, B, Tang, E, Golestanian, R
openaire   +6 more sources

Home - About - Disclaimer - Privacy