Results 21 to 30 of about 120,440 (291)

Stochastic resonance of fractional-order Langevin equation driven by periodic modulated noise with mass fluctuation

open access: yesAdvances in Difference Equations, 2020
The stochastic resonance (SR) of a second-order harmonic oscillator subject to mass fluctuation and periodic modulated noise in viscous media is studied.
Shan Yang, Mou Deng, Ruibin Ren
doaj   +1 more source

Collective Behaviors of Star-Coupled Harmonic Oscillators with Fluctuating Frequency in the Presence of Stochastic Resonance

open access: yesFractal and Fractional, 2022
The stochastic resonance (SR) of a star-coupled harmonic oscillator subject to multiplicative fluctuation and periodic force in viscous media is studied.
Ruibin Ren, George X. Yuan
doaj   +1 more source

P.: Fluctuation theorems: Work is not an observable [PDF]

open access: yes, 2007
The characteristic function of the work performed by an external time-dependent force on a Hamiltonian quantum system is identified with the time-ordered correlation function of the exponentiated system’s Hamil-tonian.
Lutz, Eric   +5 more
core   +1 more source

Jarzynski Equality for Driven Quantum Field Theories

open access: yesPhysical Review X, 2018
The fluctuation theorems, and in particular, the Jarzynski equality, are the most important pillars of modern nonequilibrium statistical mechanics.
Anthony Bartolotta, Sebastian Deffner
doaj   +1 more source

Superfluid density, Josephson relation and pairing fluctuations in a multi-component fermion superfluid

open access: yesScientific Reports, 2021
In this work, a Josephson relation is generalized to a multi-component fermion superfluid. Superfluid density is expressed through a two-particle Green function for pairing states.
Yi-Cai Zhang
doaj   +1 more source

Numerical Investigation of Periodic Fluctuations in Energy Efficiency in Centrifugal Pumps at Different Working Points

open access: yesEnergies, 2017
In order to simulate the energy efficiency fluctuation behavior of an industrial centrifugal pump with a six-blade impeller, a full-scale three-dimensional (3D) an unsteady state computational fluid dynamics (CFD) model was used.
Hehui Zhang, Shengxiang Deng, Yingjie Qu
doaj   +1 more source

Quantum work statistics close to equilibrium

open access: yesPhysical Review Research, 2020
We study the statistics of work, dissipation, and entropy production of a quantum quasi-isothermal process, where the system remains close to thermal equilibrium along the transformation.
Matteo Scandi   +3 more
doaj   +1 more source

Variational approach to KPZ: Fluctuation theorems and large deviation function for entropy production [PDF]

open access: yes, 2020
We dedicate this work to the memory of Professor Enrique Tirapegui, a great physicist and best friend.Motivated by the time behavior of the functional arising in the variational approach to the Kardar-Parisi-Zhang (KPZ) equation, and in order to study ...
Wio, Horacio S.   +8 more
core   +1 more source

Fluctuation theorems for harmonic oscillators [PDF]

open access: yes, 2007
We study experimentally the thermal fluctuations of energy input and dissipation in a harmonic oscillator driven out of equilibrium, and search for Fluctuation Relations.
Garnier, Nicolas   +2 more
core   +1 more source

The Effect of Thermal Fluctuation on the Receptor-Mediated Adhesion of a Cell Membrane to an Elastic Substrate

open access: yesMembranes, 2017
Mechanics of the bilayer membrane play an important role in many biological and bioengineering problems such as cell–substrate and cell–nanomaterial interactions.
Bahador Marzban, Hongyan Yuan
doaj   +1 more source

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