295 research outputs found
Intrinsic Periodicity of Time and Non-maximal Entropy of Universe
The universe is certainly not yet in total thermodynamical equilibrium,so
clearly some law telling about special initial conditions is needed. A universe
or a system imposed to behave periodically gets thereby required ``initial
conditions". Those initial conditions will \underline{not} look like having
already suffered the heat death, i.e. obtained the maximal entropy, like a
random state. The intrinsic periodicity explains successfully why entropy is
not maximal, but fails phenomenologically by leading to a
\underline{constant}entropy.Comment: 8 page
Law Behind Second Law of Thermodynamics --Unification with Cosmology--
In an abstract setting of a general classical mechanical system as a model
for the universe we set up a general formalism for a law behind the second law
of thermodynamics, i.e. really for "initial conditions". We propose a
unification with the other laws by requiring similar symmetry and locality
properties.Comment: 17 page
On kinetic energy stabilized superconductivity in cuprates
The possibility of kinetic energy driven superconductivity in cuprates as was
recently found in the model is discussed. We argue that the violation of
the virial theorem implied by this result is serious and means that the
description of superconductivity within the model is pathological.Comment: 3 pages, v2 includes additional reference
On the relationship between dissipation and the rate of spontaneous entropy production from linear irreversible thermodynamics
When systems are far from equilibrium, the temperature, the entropy and the thermodynamic entropy production are not defined and the Gibbs entropy does not provide useful information about the physical properties of a system. Furthermore, far from equilibrium, or if the dissipative field changes in time, the spontaneous entropy production of linear irreversible thermodynamics becomes irrelevant. In 2000 we introduced a definition for the dissipation function and showed that for systems of arbitrary size, arbitrarily near or far from equilibrium, the time integral of the ensemble average of this quantity can never decrease. In the low-field limit, its ensemble average becomes equal to the spontaneous entropy production of linear irreversible thermodynamics. We discuss how these quantities are related and why one should use dissipation rather than entropy or entropy production for non-equilibrium systems
Sur diverses formes facilement applicables, qu'on peut donner aux équations fondamentales de la théorie mécanique de la chaleur
Mémoire sur une forme nouvelle du second théorème principal de la Théorie mécanique de la Chaleur
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