<?xml version='1.0' encoding='utf-8'?>
<resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'>
<identifier identifierType='DOI'>10.1088/0953-8984/19/25/255206</identifier>
<creators>
<creator>
<creatorName>Brosens, F.</creatorName>
<affiliation>Universitatea din Antwerpen, Belgia</affiliation>
</creator>
<creator>
<creatorName>Klimin, S.N.</creatorName>
<affiliation>Universitatea din Antwerpen, Belgia</affiliation>
</creator>
<creator>
<creatorName>Devreese, J.</creatorName>
<affiliation>Universitatea din Antwerpen, Belgia</affiliation>
</creator>
</creators>
<titles>
<title xml:lang='en'>Quantum statistics for a finite number of polarons in a neutralizing background</title>
</titles>
<publisher>Instrumentul Bibliometric National</publisher>
<publicationYear>2007</publicationYear>
<relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>0953-8984</relatedIdentifier>
<subjects>
<subject>Engineering controlled terms
Electrons</subject>
<subject>Fermions</subject>
<subject>Ground state</subject>
<subject>Parameter estimation</subject>
<subject>Semiconductor quantum dots</subject>
<subject>Statistics
Engineering uncontrolled terms
Fermi statistics</subject>
<subject>Fermion density</subject>
<subject>Neutral spherical dots</subject>
<subject>Quantum statistics
Engineering main heading
Polarons</subject>
</subjects>
<dates>
<date dateType='Issued'>2007-06-27</date>
</dates>
<resourceType resourceTypeGeneral='Text'>Journal article</resourceType>
<descriptions>
<description xml:lang='en' descriptionType='Abstract'><p>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<sub>s</sub>. For a sufficiently large but finite number of polarons, the dependence of the ground-state energy on r<sub>s</sub>&nbsp;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</p></description>
</descriptions>
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<format>application/pdf</format>
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</resource>