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Title
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Quantum statistics for a finite number of polarons in a neutralizing background
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Author
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Abstract
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| The ground-state energy of an N-polaron system, confined to a spherical quantum dot with a neutralizing background charge, is investigated within an all-coupling many-body path-integral variational principle, taking into account both the Fermi statistics of the polarons and the electron-electron interaction. The treatment of the ground-state energy is performed for both closed-shell and open-shell systems. The average fermion density in the neutral spherical dot is characterized by the Wigner-Seitz parameter r(s). For a sufficiently large but finite number of polarons, the dependence of the ground-state energy on r(s) is very similar to that for a polaron gas in bulk. Hence, we can conclude that the ground-state properties of a polaron gas in bulk can be qualitatively described using a model of a finite number of polarons in a confinement potential provided by a neutralizing background charge. |
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Language
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English
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Source (journal)
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Journal of physics : condensed matter. - London
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Publication
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London
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2007
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ISSN
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0953-8984
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DOI
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10.1088/0953-8984/19/25/255206
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Volume/pages
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19
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(2007)
, p. 255206,1-255206,8
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Article Reference
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255206
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ISI
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000247074800009
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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