Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
A nonlinear relaxation process is considered for a macroscopic thermodynamic quantity, generalizing recent work by Taniguchi and Cohen [J. Stat. Phys. 126, 1 (2006)] that was based on the Onsager-Machlup theory. It is found that the fluctuation theorem holds in the nonlinear nonequilibrium regime if the change of entropy characterized by local equilibria is appropriately renormalized. The fluctuation theorem for the ordinary entropy change is recovered in the linear near-equilibrium case.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevE.78.021101 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Local nonequilibrium thermodynamics of polymer collapse dynamics.
J Chem Phys
September 2025
Department of Applied Chemistry, University of Seoul, Seoul 02504, Republic of Korea.
Nonequilibrium thermodynamics plays a crucial role in understanding a wide range of physical and chemical processes. While significant advances have been made through frameworks, such as the fluctuation theorem, it remains challenging to define thermodynamic quantities, such as energy, entropy, and free energy, at the local level during nonequilibrium processes. Recently, Jinwoo and Tanaka [Sci.
View Article and Find Full Text PDFLong-Range Persistence Active Fluctuation Effect on a Colloidal Particle: Dissipation and Entropy Production.
J Phys Condens Matter
September 2025
Mindanao State University, Marawi City, Marawi City, 9700, PHILIPPINES.
We study the dynamics and thermodynamics of a harmonically trapped colloidal particle driven by active noise with long-range memory. The active force is modeled as a stationary Gaussian process with a power-law decay, allowing us to interpolate between short- and long-time regimes by varying {the power law exponent $\alpha$}. In the overdamped setting, we derive exact solutions for the particle's position statistics and two-time correlations, and characterize how active noise affects its relaxation spectrum.
View Article and Find Full Text PDFPrincipal Connection Between Typical Heart Rate Variability Parameters as Revealed by a Comparative Analysis of Their Heart Rate and Age Dependence.
Entropy (Basel)
July 2025
Institute of Biophysics, HUN-REN Biological Research Center, 6701 Szeged, Hungary.
Heart rate (HR) is strongly affected by the autonomic nervous system (ANS), while its spontaneous fluctuations, called heart rate variability (HRV), report about the dynamics of the complex, vegetative regulation of the heart rhythm. Hence, HRV is widely considered an important marker of the ANS effects on the cardiac system, and as such, a crucial diagnostic tool in cardiology. In order to obtain nontrivial results from HRV analysis, it would be desirable to establish exact, universal interrelations between the typical HRV parameters and HR itself.
View Article and Find Full Text PDFA semiclassical nonequilibrium Green's function approach to electron transport in systems exhibiting electron-phonon couplings.
J Chem Phys
August 2025
Department of Chemistry and Biochemistry, Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742, USA.
We formulate a semiclassical theory for electron transport in open quantum systems with electron-phonon interactions adequate for situations when the system's phonon dynamics is comparable with the electron transport timescale. Starting from the Keldysh non-equilibrium Green's function formalism, we obtain equations of motion for the retarded and lesser electronic Green's functions, including contributions due to the phonon dynamics up to second order in the electron-phonon coupling strength. The resulting equations assume that the system's phonons follow classical time-local dynamics with delta-correlated noise.
View Article and Find Full Text PDFSimultaneous interferometric determination of Gaussian, tilt and bending moduli of biomimetic membranes.
Soft Matter
September 2025
Department of Physics, Indian Institute of Science, Bangalore 560012, India.
Cell membrane remodelling during key processes such as endocytosis, exocytosis, pore formation, and cell division involves large changes in the curvature, which are governed by bending, Gaussian and tilt moduli. While bending rigidity has been extensively studied, it has been a major challenge to experimentally measure Gaussian and tilt moduli due to fundamental limitations imposed by the Gauss-Bonnet theorem on closed membranes and the nanometric size of the constituents. We address these issues by studying a fluid monolayer model membrane consisting of aligned, micron-length rod-like particles, known as colloidal membranes.
View Article and Find Full Text PDF