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dc.contributor.authorAndersen, Jens Oluf
dc.contributor.authorKneschke, Patrick
dc.date.accessioned2019-03-11T09:06:11Z
dc.date.available2019-03-11T09:06:11Z
dc.date.created2018-04-12T09:07:37Z
dc.date.issued2018
dc.identifier.citationPhysical Review D. 2018, 97:076005 (7), 1-12.nb_NO
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/11250/2589502
dc.description.abstractThe quark-meson model is often used as a low-energy effective model for QCD to study the chiral transition at finite temperature T, baryon chemical potential μB, and isospin chemical potential μI. We determine the parameters of the model by matching the meson and quark masses, as well as the pion decay constant to their physical values using the on shell (OS) and modified minimal subtraction (¯¯¯¯¯¯MS) schemes. In this paper, the existence of different phases at zero temperature is studied. In particular, we investigate the competition between an inhomogeneous chiral condensate and a homogeneous pion condensate. For the inhomogeneity, we use a chiral-density wave ansatz. For a sigma mass of 600 MeV, we find that an inhomogeneous chiral condensate exists only for pion masses below approximately 37 MeV. We also show that due to our parameter fixing, the onset of pion condensation takes place exactly at μcI=12mπ in accordance with exact results.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Physical Societynb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleChiral density wave versus pion condensation at finite density and zero temperaturenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber1-12nb_NO
dc.source.volume97:076005nb_NO
dc.source.journalPhysical Review Dnb_NO
dc.source.issue7nb_NO
dc.identifier.doi10.1103/PhysRevD.97.076005
dc.identifier.cristin1578904
dc.description.localcodePublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.nb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal