Specific heat of a driven lattice gas

Dolai, Pritha; Maes, Christian

doi:10.1016/j.aop.2023.169546

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…In general, nonequilibrium heat capacities may be negative. As explained in [6,7], it expresses an anticorrelation between heat and the occupation statistics. Yet, close-toequilibrium that is impossible.…”

Section: Examplesmentioning

confidence: 99%

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Close-to-equilibrium heat capacity

Khodabandehlou,

Maes

2024

J. Phys. A: Math. Theor.

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Close to equilibrium, the excess heat governs the static fluctuations. We study the heat capacity in that McLennan regime, i.e. in linear order around equilibrium, using an expression in terms of the average energy that extends the equilibrium formula in the canonical ensemble. It is derivable from an entropy and it always vanishes at zero temperature. Any violation of an extended Third Law is therefore a nonlinear effect.

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Section: Examplesmentioning

confidence: 99%

“…In recent papers [4][5][6][7][8], building on suggestions from steady-state thermodynamics [9][10][11], the notion of heat capacity was generalized to driven and active systems. There, a quasipotential captures the quasistatic excess heat, [3,7,12,13], which is the analogue of energy changes under detailed balance processes.…”

Section: Introductionmentioning

confidence: 99%

Close-to-equilibrium heat capacity

Khodabandehlou,

Maes

2024

J. Phys. A: Math. Theor.

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Tailoring the first law of thermodynamics for convective flows

Makuch

2024

Physics of Fluids

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Equilibrium thermodynamics is grounded in the law of energy conservation, with a specific focus on how systems exchange energy with their environment during transitions between equilibrium states. These transitions are typically characterized by quantities such as heat absorption and the work needed to alter the system's volume. This study is inspired by the potential to develop an analogous, straightforward thermodynamic description for systems that are out of equilibrium. Here, we explore the global energy exchanges that occur during transitions between these nonequilibrium states. We study a system with heat flow and an external (gravity) field that exhibits macroscopic motion, such as Rayleigh–Bénard convection. We show that the formula for system's energy exchange has the same form as in equilibrium. It opens the possibility of describing out-of-equilibrium systems using a few simple laws similar to equilibrium thermodynamics.

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Tailoring the First Law of Thermodynamics for Convective Flows

Makuch

2024

Preprint

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The basis of equilibrium thermodynamics is the law of energy conservation. Thermodynamics applies this fundamental law in a specific manner by focusing on how a system exchanges energy with its environment during transitions between equilibrium states, characterized by quantities such as heat absorbed by the system and the work required to change its volume. Motivated by the possible existence of an equally simple thermodynamic-like description beyond equilibrium, we investigate global energy exchange in transitions between out-of-equilibrium states. We study a system with heat flow and an external (gravity) field that exhibits macroscopic motion, such as Rayleigh-Bènard convection. The results show that the system’s energy exchange has the same form as in equilibrium. It opens the possibility of describing out-of-equilibrium systems using a few simple laws similar to equilibrium thermodynamics.

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Specific heat of a driven lattice gas

Cited by 4 publications

References 17 publications

Close-to-equilibrium heat capacity

Close-to-equilibrium heat capacity

Tailoring the first law of thermodynamics for convective flows

Tailoring the First Law of Thermodynamics for Convective Flows

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