Results 71 to 80 of about 1,674,824 (289)

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

Quantum stochastic thermodynamic on harmonic networks

open access: yesNew Journal of Physics, 2016
Fluctuation theorems are symmetry relations for the probability to observe an amount of entropy production in a finite-time process. In a recent paper Pigeon et al (2016 New. J. Phys.
Sebastian Deffner
doaj   +1 more source

Fluctuation Theorem of Information Exchange within an Ensemble of Paths Conditioned on Correlated-Microstates

open access: yesEntropy, 2019
Fluctuation theorems are a class of equalities that express universal properties of the probability distribution of a fluctuating path functional such as heat, work or entropy production over an ensemble of trajectories during a non-equilibrium process ...
Lee Jinwoo
doaj   +1 more source

Comment on "Entropy Production and Fluctuation Theorems for Active Matter". [PDF]

open access: yesPhysical Review Letters, 2018
This is a comment to a letter by D. Mandal, K. Klymko and M. R. DeWeese published as Phys. Rev. Lett. 119, 258001 (2017).
Lorenzo Caprini   +3 more
semanticscholar   +1 more source

Ensembles, turbulence and fluctuation theorem [PDF]

open access: yesThe European Physical Journal E, 2020
The fluctuation theorem is considered intrinsically linked to reversibility and therefore its phenomenological consequence, the fluctuation relation, is sometimes considered not applicable. Nevertheless here is considered the paradigmatic example of irreversible evolution, the 2D Navier-Stokes incompressible flow, to show how universal properties of ...
openaire   +2 more sources

Transient quantum fluctuation theorems and generalized measurements

open access: yesNew Journal of Physics, 2014
The transient quantum fluctuation theorems of Crooks and Jarzynski restrict and relate the statistics of work performed in forward and backward forcing protocols.
B Prasanna Venkatesh   +2 more
doaj   +1 more source

(Non) equilibrium dynamics: a (broken) symmetry of the Keldysh generating functional

open access: yesSciPost Physics, 2018
We unveil the universal (model-independent) symmetry satisfied by Schwinger-Keldysh quantum field theories whenever they describe equilibrium dynamics.
Camille Aron, Giulio Biroli, Leticia F. Cugliandolo
doaj   +1 more source

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir   +2 more
wiley   +1 more source

Quantum-Heat Fluctuation Relations in Three-Level Systems Under Projective Measurements

open access: yesCondensed Matter, 2020
We study the statistics of energy fluctuations in a three-level quantum system subject to a sequence of projective quantum measurements. We check that, as expected, the quantum Jarzynski equality holds provided that the initial state is thermal.
Guido Giachetti   +3 more
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

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