Nonequilibrium driven by an external torque in the presence of a magnetic field.
@article{Lee2019NonequilibriumDB,
title={Nonequilibrium driven by an external torque in the presence of a magnetic field.},
author={Sangyun Lee and Chulan Kwon},
journal={Physical review. E},
year={2019},
volume={99 5-1},
pages={
052142
}
}We investigate a two-dimensional motion of a colloid in a harmonic trap driven out of equilibrium by an external nonconservative force producing a torque in the presence of a uniform magnetic field applied perpendicular to the plane of motion. We find a circulating steady-state current diagnostic to nonequilibrium. Unlikely in the overdamped limit, inertial motion requires a sufficient central force to reach steady state. The magnetic field can enhance or depress central force depending on its…
4 Citations
Thermodynamic uncertainty relation in the overdamped limit with a magnetic Lorentz force
- PhysicsPhysical Review Research
- 2021
In nonequilibrium systems, the relative fluctuation of a current has a universal trade-off relation with the entropy production, called the thermodynamic uncertainty relation (TUR). For systems with…
Thermodynamic uncertainty relation for underdamped Langevin systems driven by a velocity-dependent force.
- PhysicsPhysical review. E
- 2019
This study presents a TUR, applicable to a system driven by a velocity-dependent force in the context of underdamped Langevin dynamics, by extending the theory of Vu and Hasegawa, and shows that it accurately describes the trade-off properties of a molecular refrigerator (cold damping), Brownian dynamics in a magnetic field, and an active particle system.
Exactly solvable two-terminal heat engine with asymmetric Onsager coefficients: Origin of the power-efficiency bound.
- PhysicsPhysical review. E
- 2020
It is shown that the dream engine regime cannot be accessible, even with the asymmetric Onsager coefficients, due to an instability keeping the engine from reaching its steady state, consistent with recent tradeoff relations between the engine power and efficiency.
Inertial effects on the Brownian gyrator.
- PhysicsPhysical review. E
- 2021
The results suggest that the Langevin dynamics description of the Brownian gyrator is intrinsically different from that with Brownian dynamics, and j_{θ} is proven to be essential and convenient for estimating stochastic energetics even in the underdamped regime.
References
SHOWING 1-10 OF 102 REFERENCES
Work-fluctuation theorems for a particle in an electromagnetic field
- Physics
- 2010
The theoretical study about the transient and stationary fluctuation theorems is extended to include the effects of electromagnetic fields on a charged Brownian particle. In particular, we consider a…
Nonequilibrium fluctuations for a single-particle analog of gas in a soft wall.
- PhysicsPhysical review letters
- 2015
This work uses a precise technique to modulate the stiffness in time to accurately estimate the probability distributions of work produced for the compression and expansion processes and confirms the fluctuation theorem from the ratio of the two distributions.
Nonequilibrium fluctuations for linear diffusion dynamics.
- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2011
A statistical mechanical theory based on generalized thermodynamic quantities such as energy, work, and heat is developed and found an interesting dynamic phase transition in the exponential tail shape of P(W), associated with a singularity found in solutions of the nonlinear differential equation.
Emergence of nonwhite noise in Langevin dynamics with magnetic Lorentz force.
- PhysicsPhysical review. E
- 2018
The importance of the nonwhite noise is demonstrated by investigating the heat dissipation by a driven Brownian particle, where the emergent non white noise has a physically measurable effect.
Energy dissipation of rigid dipoles in a viscous fluid under the action of a time-periodic field: The influence of thermal bath and dipole interaction.
- PhysicsPhysical review. E
- 2018
Ferrofluid heating by an external alternating field is studied based on the rigid dipole model, where the magnetization of each particle in a fluid is supposed to be firmly fixed in the crystal lattice to take into account the thermal noise and interparticle interaction.
Mean field theory of the nonlinear response of an interacting dipolar system with rotational diffusion to an oscillating field
- Physics
- 2003
A mean field theory of dipolar relaxation in a system of interacting dipoles is developed on the basis of a local field picture. The distribution of orientations of a selected dipole is assumed to…
Dynamical ensembles in stationary states
- Physics
- 1995
We propose, as a generalization of an idea of Ruelle's to describe turbulent fluid flow, a chaotic hypothesis for reversible dissipative many-particle systems in nonequilibrium stationary states in…
Energy dissipation and violation of the fluctuation-response relation in nonequilibrium Langevin systems.
- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2006
This paper presents a comprehensive description of an equality between the extent of violation of the fluctuation-response relation in the nonequilibrium steady state and the rate of energy dissipation from the system into the environment, and provides a detailed derivation for various types of models.
Nonequilibrium fluctuations in a resistor.
- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2005
It is stressed that FT can be used to measure the dissipated power P = R I2 in the system by just studying the PDFs' symmetries, and it is shown that FT are experimentally accessible and valid.
Unconventional entropy production in the presence of momentum-dependent forces
- Physics
- 2015
We investigate the unconventional nature of entropy production (EP) in nonequilibrium systems with odd-parity variables that change signs under time reversal. We consider the Brownian motion of a…



