62 citations · 381 across the 51 of their papers we have counts for
15 papers · 1 filter
The statistics of mesoscopic systems and the physical interpretation of extensive and non-extensive entropies
Dragos-Victor Anghel, Alexandru S. Parvan
The postulates of thermodynamics were originally formulated for macroscopic systems. They lead to the definition of the entropy, which, for a homogeneous system, is a homogeneous f…
The stumbling block of the Gibbs entropy: the reality of the negative absolute temperatures
Dragos-Victor Anghel
The second Tisza-Callen postulate of equilibrium thermodynamics states that for any system exists a function of the system's extensive parameters, called entropy, defined for all e…
From Fractional Exclusion Statistics Back to Bose and Fermi Distributions
Dragos-Victor Anghel
Fractional exclusion statistics (FES) is a generalization of the Bose and Fermi statistics. Typically, systems of interacting particles are described as ideal FES systems and the p…
Equivalence between fractional exclusion statistics and self-consistent mean-field theory in interacting particle systems in any number of dimensions
Dragos-Victor Anghel, George Alexandru Nemnes, Francesca Gulminelly
We describe a mean field interacting particle system in any number of dimensions and in a generic external potential as an ideal gas with fractional exclusion statistics (FES). We…
Universal features in the thermodynamics and heat transport by particles of any statistics
Dragoş-Victor Anghel
I discuss in parallel two universal phenomena: the independence of statistics of the heat capacity and entropy of ideal gases of the same, constant, density of states, on one hand,…
Divergent specific heat at zero Kelvins: breakdown of the Third law of thermodynamics
Dragos-Victor Anghel
Thermodynamics, the branch of physics concerned with the description of macroscopic bodies, heat exchange and the conversion of different forms of energy is based on four laws: the…
Stochastic simulations for the time evolution of systems which obey generalized statistics: Fractional exclusion statistics and Gentile's statistics
George Alexandru Nemnes, Dragos-Victor Anghel
We present a stochastic method for the simulation of the time evolution in systems which obey generalized statistics, namely fractional exclusion statistics and Gentile's statistic…
An ansatz for the exclusion statistics parameters in macroscopic physical systems described by fractional exclusion statistics
Dragoş-Victor Anghel
I introduce an ansatz for the exclusion statistics parameters of fractional exclusion statistics (FES) systems and I apply it to calculate the statistical distribution of particles…
Comment on "Statistical Distribution for Generalized Ideal Gas of Fractional-Statistics Particles", Phys. Rev. Lett. {\bf 73}, 922 (1994)
Dragoş-Victor Anghel
In Phys. Rev. Lett. 67, 937 (1991) [1], Haldane introduced the fruitful concept of fractional exclusion statistics (FES). One of the most influential papers in which the thermodyna…
The thermodynamic limit for fractional exclusion statistics
Dragoş-Victor Anghel
I discuss Haldane's concept of generalised exclusion statistics (Phys. Rev. Lett. {\bf 67}, 937, 1991) and I show that it leads to inconsistencies in the calculation of the particl…
First Order Phase Transition in a Model for Generalized Statistics
Dragos-Victor Anghel
A first order phase transition is found in a model which was introduced originally by Murthy and Shankar [Phys. Rev. B 60, 6517 (1999)] to describe systems of generalised exclusion…
Fluctuations of the Fermi condensate in ideal gases
Dragos-Victor Anghel, Oleg Fefelov, Y. M. Galperin
We calculate numerically and analytically the fluctuations of the fermionic condensate and of the number of particles above the condensate for systems of constant density of states…
Canonical-grandcanonical ensemble in-equivalence in Fermi systems?
Dragos-Victor Anghel
I discuss the effects of fermionic condensation in systems of constant density of states. I show that the condensation leads to a correction of the chemical potential and of the Fe…
Universal behaviour of ideal and interacting quantum gases in two dimensions
Dragos-Victor Anghel
I discuss ideal and interacting quantum gases obeying general fractional exclusion statistics. For systems with constant density of single-particle states, described in the mean fi…
Dimensionality effects in restricted bosonic and fermionic systems
Dragoş-Victor Anghel
The phenomenon of Bose-like condensation, the continuous change of the dimensionality of the particle distribution as a consequence of freezing out of one or more degrees of freedo…