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Interacting Bose gas confined by an external potential

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Gnanapragasam, Gnanasangeetha; Das, Mukunda P

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Interacting Bose gas confined by an external potential is studied using Green functions in spectral representation. The calculation is presented transparently using the equation of motion method. With this, the interplay between the condensed and the non-condensed atoms is inevitably seen. An expression for the condensate number at finite temperature is obtained in the lowest and first orders, from which depletion of bosons from the ground state is qualitatively analyzed. Finally, we discuss...[Show more]

dc.contributor.authorGnanapragasam, Gnanasangeetha
dc.contributor.authorDas, Mukunda P
dc.date.accessioned2015-12-10T22:56:49Z
dc.identifier.issn0217-751X
dc.identifier.urihttp://hdl.handle.net/1885/60393
dc.description.abstractInteracting Bose gas confined by an external potential is studied using Green functions in spectral representation. The calculation is presented transparently using the equation of motion method. With this, the interplay between the condensed and the non-condensed atoms is inevitably seen. An expression for the condensate number at finite temperature is obtained in the lowest and first orders, from which depletion of bosons from the ground state is qualitatively analyzed. Finally, we discuss the behaviour of the specific heat of a trapped interacting Bose gas in the quasi-continuum limit.
dc.publisherWorld Scientific Publishing Company
dc.sourceInternational Journal of Modern Physics A (IJMPA)
dc.subjectKeywords: Beyond mean field; Bose condensation; Condensate number; External confinement; Green functions; Interaction
dc.titleInteracting Bose gas confined by an external potential
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume22
dc.date.issued2007
local.identifier.absfor010501 - Algebraic Structures in Mathematical Physics
local.identifier.ariespublicationu4167262xPUB537
local.type.statusPublished Version
local.contributor.affiliationGnanapragasam, Gnanasangeetha, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationDas, Mukunda P, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue27
local.bibliographicCitation.startpage4923
local.bibliographicCitation.lastpage4936
local.identifier.doi10.1142/S0217751X07038281
dc.date.updated2015-12-10T07:56:42Z
local.identifier.scopusID2-s2.0-36249024348
CollectionsANU Research Publications

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