Title:
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Average ground-state energy of finite Fermi systems
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Author:
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Centelles Aixalà, Mario; Leboeuf, P.; Monastra, A. G.; Roccia, J.; Schuck, Peter; Viñas Gausí, Xavier
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Other authors:
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Universitat de Barcelona |
Abstract:
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Semiclassical theories such as the Thomas-Fermi and Wigner-Kirkwood methods give a good description of the smooth average part of the total energy of a Fermi gas in some external potential when the chemical potential is varied. However, in systems with a fixed number of particles N, these methods overbind the actual average of the quantum energy as N is varied. We describe a theory that accounts for this effect. Numerical illustrations are discussed for fermions trapped in a harmonic oscillator potential and in a hard-wall cavity, and for self-consistent calculations of atomic nuclei. In the latter case, the influence of deformations on the average behavior of the energy is also considered. |
Subject(s):
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-Estructura nuclear -Física nuclear -Mecànica estadística -Nuclear structure -Nuclear physics -Statistical mechanics |
Rights:
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(c) The American Physical Society, 2006
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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