Results 21 to 30 of about 6,598,796 (294)
Entropy, Holography, and the Second Law [PDF]
The geometric entropy in quantum field theory is not a Lorentz scalar and has no invariant meaning, while the black hole entropy is invariant. Renormalization of entropy and energy for reduced density matrices may lead to the negative free energy even if no boundary conditions are imposed.
openaire +3 more sources
Second law of information dynamics
One of the most powerful laws in physics is the second law of thermodynamics, which states that the entropy of any system remains constant or increases over time.
Melvin M. Vopson, S. Lepadatu
doaj +1 more source
Entropy Scaling Law and the Quantum Marginal Problem
Quantum many-body states that frequently appear in physics often obey an entropy scaling law, meaning that an entanglement entropy of a subsystem can be expressed as a sum of terms that scale linearly with its volume and area, plus a correction term that
Isaac H. Kim
doaj +1 more source
Entropy of radiation: the unseen side of light
Despite the fact that 2015 was the international year of light, no mention was made of the fact that radiation contains entropy as well as energy, with different spectral distributions.
Alfonso Delgado-Bonal
doaj +1 more source
Entropy Scaling Laws for Diffusion [PDF]
Comment to the letter of Samanta et al., Phys. Rev. Lett. 92, 145901 (2004).
openaire +2 more sources
Entropy production and lost work for irreversible processes [PDF]
In this paper we analyse in depth the Lost Work in an irreversible process (i.e. IRREV REV Lost ) W =W -W . This quantity is also called ‘degraded energy’ or ‘Energy unavailable to do work’. Usually in textbooks one can find the relation Lost U W o TDS .
Di Liberto, Francesco
core +1 more source
Relative entropy in diffusive relaxation [PDF]
We establish convergence in the diffusive limit from entropy weak solutions of the equations of compressible gas dynamics with friction to the porous media equation away from vacuum.
Tzavaras, Athanasios E. +2 more
core +1 more source
The second law of thermodynamics is indispensable in engineering applications. It allows us to determine if a given process is feasible or not, and if the given process is feasible, how efficient or inefficient is the process.
Rajinder Pal
doaj +1 more source
Nonequilibrium Entropy Conservation and the Transport Equations of Mass, Momentum, and Energy
Nonequilibrium statistical mechanics or molecular theory has put the transport equations of mass, momentum and energy on a firm or rigorous theoretical foundation that has played a critical role in their use and applications. Here, it is shown that those
Michael H. Peters
doaj +1 more source
On the physical process first law for dynamical black holes
Physical process version of the first law of black hole mechanics relates the change in entropy of a perturbed Killing horizon, between two asymptotic cross sections, to the matter flow into the horizon.
Akash Mishra +3 more
doaj +1 more source

