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dc.contributor.authorGhisoiu, Ioan
dc.contributor.authorGorda, Tyler
dc.contributor.authorKurkela, Aleksi
dc.contributor.authorRomatschke, Paul
dc.contributor.authorSäppi, Matias
dc.contributor.authorVuorinen, Aleksi
dc.date.accessioned2018-04-10T09:22:27Z
dc.date.available2018-04-10T09:22:27Z
dc.date.created2017-01-02T10:31:05Z
dc.date.issued2017-02
dc.identifier.citationGhisoiu, I et al. (2017) On high-order perturbative calculations at finite density. Nuclear Physics B. 915, pp. 102-118.nb_NO
dc.identifier.issn0550-3213
dc.identifier.urihttp://hdl.handle.net/11250/2493375
dc.description.abstractWe discuss the prospects of performing high-order perturbative calculations in systems characterized by a vanishing temperature but finite density. In particular, we show that the determination of generic Feynman integrals containing fermionic chemical potentials can be reduced to the evaluation of three-dimensional phase space integrals over vacuum on-shell amplitudes — a result reminiscent of a previously proposed “naive real-time formalism” for vacuum diagrams. Applications of these rules are discussed in the context of the thermodynamics of cold and dense QCD, where it is argued that they facilitate an extension of the Equation of State of cold quark matter to higher perturbative orders.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectfysikknb_NO
dc.titleOn high-order perturbative calculations at finite densitynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.rights.holder© 2016 The Author(s).nb_NO
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430nb_NO
dc.source.pagenumber102-118nb_NO
dc.source.volume915nb_NO
dc.source.journalNuclear Physics Bnb_NO
dc.identifier.doi10.1016/j.nuclphysb.2016.11.023
dc.identifier.cristin1418966
cristin.unitcode217,8,0,0
cristin.unitnameDet teknisk- naturvitenskapelige fakultet
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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