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Fluctuations in the level density of a fermi gas

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Relaño Pérez, Armando and Leboeuf, P. and Monastra, A. G. (2005) Fluctuations in the level density of a fermi gas. Physical Review Letters, 94 (10). ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.94.102502


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http://journals.aps.org/Publisher


Abstract

We present a theory that accurately describes the counting of excited states of a noninteracting fermionic gas. At high excitation energies the results reproduce Bethe's theory. At low energies oscillatory corrections to the many-body density of states, related to shell effects, are obtained. The fluctuations depend nontrivially on energy and particle number. Universality and connections with Poisson statistics and random matrix theory are established for regular and chaotic single-particle motion.


Item Type:Article
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© 2005 The American Physical Society

Uncontrolled Keywords:Nucleus, Formula
Subjects:Sciences > Physics > Thermodynamics
ID Code:27771
Deposited On:18 Dec 2014 11:42
Last Modified:18 Dec 2014 11:42

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