Results 51 to 60 of about 120,755 (193)

Generalized chemical model for plasmas with application to the ionization potential depression

New Journal of Physics, 2023
On the basis of the generalized Poisson–Boltzmann equation derived from the Bogolyubov chain of equations for the equilibrium distribution functions in the pair correlation approximation, a general expression is proposed for the Helmholtz free energy of ...
A E Davletov, Yu V Arkhipov, Ye S Mukhametkarimov, L T Yerimbetova, I M Tkachenko   +4 more
doaj   +1 more source

Thermodynamics of the Flexible Metal-Organic Framework Material MIL-53(Cr) From First Principles

, 2017
We use first-principles density functional theory total energy and linear response phonon calculations to compute the Helmholtz and Gibbs free energy as a function of temperature, pressure, and cell volume in the flexible metal-organic framework material
Cockayne, Eric
core   +2 more sources

Partition Functions, the Bekenstein Bound and Temperature Inversion in Anti-de Sitter Space and its Conformal Boundary [PDF]

, 2006
We reformulate the Bekenstein bound as the requirement of positivity of the Helmholtz free energy at the minimum value of the function L=E- S/(2\pi R), where R is some measure of the size of the system.
B. C. Berndt, C. N. Pope, G. W. Gibbons, J. S. Dowker, M. Gunaydin, M. J. Perry, O. Aharony, R. P. Feynman   +7 more
core   +4 more sources

Calculation of electronic excited states of molecules using the Helmholtz free-energy minimum principle [PDF]

Physical Review A, 2013
We show that the Helmholtz free-energy variational principle is the physical principle underlying the ensemble variational theory formulated in seminal papers by Theophilou and by Gross, Oliveira, and Kohn. A method of calculating electronic excitations of atoms and molecules is then proposed, based on the constrained minimization of the free energy ...
Pastorczak, E., Gidopoulos, N.I., Pernal, K.   +2 more
openaire   +2 more sources

Thermal aspects of central supermassive black holes in a fractal framework

Physics Letters B
In this paper we will compute the entropy of a supermassive black hole (SMBH) that dwells at the center of the galaxies described in an intricate, fractal, structure.
Everton M.C. Abreu, M.J. Neves
doaj   +1 more source

Bose-Einstein Condensation in the Relativistic Ideal Bose Gas

, 2007
The Bose-Einstein condensation (BEC) critical temperature in a relativistic ideal Bose gas of identical bosons, with and without the antibosons expected to be pair-produced abundantly at sufficiently hot temperatures, is exactly calculated for all boson ...
George A. Baker, J. I. Kapusta, K. Huang, M. de Llano, M. Grether, R. K. Pathria, Y. Takasu   +6 more
core   +1 more source

Duality in Non-Trivially Compactified Heterotic Strings

, 1992
We study the implications of duality symmetry on the analyticity properties of the partition function as it depends upon the compactification length. In order to obtain non-trivial compactifications, we give a physical prescription to get the Helmholtz ...
A. Gupta, B. McClain, B. Sathiapalan, D. Gross, D. Gross, D. Gross, D. Kutasov, D. Mumford, E. Alvarez, E. Alvarez, E. Alvarez, E. Alvarez, E. Alvarez, G. Moore, G. Veneziano, I. Antoniadis, I. Kani, J. Atick, J. Harvey, J. Polchinski, J. Polchinski, J. Schwartz, K. Narain, K. Narain, K. O'Brien, L. Alvarez Gaumé, L. Dixon, M. A. R. Osorio, M. A. Vázquez-Mozo, M. Bershadsky, M. Osorio, M. Osorio, N. Deo, N. Sakai, P. Ginsparg, P. Salomonson, R. Brandenberger, T. Kugo, T. Taylor, V. Nair, Ya. Kogan   +40 more
core   +1 more source

Jarzynski equality for superconducting optical cavities: An alternative path to determine Helmholtz free energy [PDF]

Physica A: Statistical Mechanics and its Applications, 2019
To appear in Physica ...
de Paula, Josiane Oliveira Rezende, Peixoto de Faria, J. G., de Oliveira, J. G. G., de Carvalho Falcão, Ricardo, Oliveira, Adélcio C.   +4 more
openaire   +3 more sources

Holonomic and Non-Holonomic Geometric Models Associated to the Gibbs–Helmholtz Equation

Mathematics, 2023
By replacing the internal energy with the free energy, as coordinates in a “space of observables”, we slightly modify (the known three) non-holonomic geometrizations from Udriste’s et al. work. The coefficients of the curvature tensor field, of the Ricci
Cristina-Liliana Pripoae, Iulia-Elena Hirica, Gabriel-Teodor Pripoae, Vasile Preda   +3 more
doaj   +1 more source

Rod-like Polyelectrolytes in Presence of Monovalent Salt

, 1998
We investigate the properties of rigid polyelectrolyte solutions in presence of monovalent salt. The free energy within the Debye-H\"uckel-Bjerrum (DHBj) theory [M. E. Fisher and Y. Levin, {\it Phys. Rev. Lett.} 71, 3826 (1993)] is constructed.
Barbosa, Marcia C., Kuhn, Paulo S., Levin, Yan   +2 more
core   +1 more source