Exclusion Statistics Transformation and Ensemble Equivalence Tested From a Different Perspective

Details Exclusion Statistics Transformation and Ensemble Equivalence Tested From a Different Perspective Exclusion Statistics Transformation and Ensemble Equivalence Tested From a Different Perspective

2003-10-16

arxiv.org/abs/cond-mat/0310377v3

Physics

Condensed Matter

Statistical Mechanics

I changed the paper (including abstract) to be identical to the one accepted for publication (Rom. J. Phys. 2009): - in Sectio

Scientific paper

We generalize the method introduced in J. Phys. A: Math. Gen. 35, 7255 (2002) based on the concept of thermodynamic equivalence and we transform a Fermi system of general density of states into a thermodynamically equivalent Bose system. This consists of mapping configurations of fermions from the original system onto configurations of bosons, the initial and final configurations having the same energy above the many-body ground state energy. In this way we obtain two systems of particles of different exclusion statistics, but which have the same entropies--and therefore identical canonical thermodynamic properties. This method enables one in general to calculate the system properties in either of the bosonic and fermionic representations. We check the method here in microscopic detail by calculating the equilibrium particle distributions in the two representations using the entropy maximization at fixed particle number and fixed ``fermionic'' and ``bosonic'' energies, respectively. Analytical calculations seem difficult to do, but we check the results numerically and we find them equal within the numerical accuracy.

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