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Thermodynamic potentials and thermodynamic relations in nonextensive thermodynamics [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2011
The generalized Gibbs free energy and enthalpy is derived in the framework of nonextensive thermodynamics by using the so-called physical temperature and the physical pressure. Some thermodynamical relations are studied by considering the difference between the physical temperature and the inverse of Lagrange multiplier.
Jiulin Du, Lina Guo
openaire   +4 more sources

Quantum thermodynamics: thermodynamics at the nanoscale [PDF]

open access: yesJournal of Modern Optics, 2004
A short introduction on quantum thermodynamics is given and three new topics are discussed: 1) Maximal work extraction from a finite quantum system. The thermodynamic prediction fails and a new, general result is derived, the ``ergotropy''.
A. E. Allahverdyan   +8 more
core   +7 more sources

Thermodynamic holography [PDF]

open access: yesScientific Reports, 2015
AbstractThe holographic principle states that the information about a volume of a system is encoded on the boundary surface of the volume. Holography appears in many branches of physics, such as optics, electromagnetism, many-body physics, quantum gravity and string theory. Here we show that holography is also an underlying principle in thermodynamics,
Bo-Bo Wei, Zhan-Feng Jiang, Ren-Bao Liu
openaire   +3 more sources

Thermodynamics of decoherence

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2023
We investigate the non-equilibrium thermodynamics of pure decoherence. In a pure decoherence process, the system Hamiltonian is a constant of motion and there is no direct energy exchange between the system and its surroundings. Nevertheless, the environment’s energy is not generally conserved and in this work we show that this leads to non-trivial ...
Maria Popovic   +2 more
openaire   +2 more sources

The thermodynamic brain [PDF]

open access: yesCritical Care, 2014
AbstractApart from its complex functionality, the brain is a robust thermodynamic machine; the tissue metabolic rate is high and it is thermally shielded by a skull. Therefore, if there is no high-volume blood flow to cool and stabilize the brain temperature, the possibility of unstable behavior seems to be high.
Marek Czosnyka   +2 more
openaire   +4 more sources

Multiscale Thermodynamics

open access: yesEntropy, 2021
Multiscale thermodynamics is a theory of the relations among the levels of investigation of complex systems. It includes the classical equilibrium thermodynamics as a special case, but it is applicable to both static and time evolving processes in externally and internally driven macroscopic systems that are far from equilibrium and are investigated at
openaire   +6 more sources

Can the entanglement entropy be the origin of black-hole entropy ? [PDF]

open access: yes, 1997
Entanglement entropy is often speculated as a strong candidate for the origin of the black-hole entropy. To judge whether this speculation is true or not, it is effective to investigate the whole structure of thermodynamics obtained from the entanglement
A. P. Balachandran   +26 more
core   +2 more sources

Thermodynamics Far from the Thermodynamic Limit [PDF]

open access: yesThe Journal of Physical Chemistry B, 2017
Understanding how small systems exchange energy with a heat bath is important to describe how their unique properties can be affected by the environment. In this contribution, we apply Landsberg's theory of temperature-dependent energy levels to describe the progressive thermalization of small systems as their spectrum is perturbed by a heat bath.
Rodrigo de Miguel, J. Miguel Rubí
openaire   +4 more sources

Phantom thermodynamics [PDF]

open access: yesNuclear Physics B, 2004
This paper deals with the thermodynamic properties of a phantom field in a flat Friedmann-Robertson-Walker universe. General expressions for the temperature and entropy of a general dark-energy field with equation of state $p= $ are derived from which we have deduced that, whereas the temperature of a cosmic phantom fluid ($
González-Díaz, Pedro F.   +1 more
openaire   +3 more sources

Thermodynamics [PDF]

open access: yesJournal of the Franklin Institute, 1887
n ...
openaire   +1 more source

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