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dc.contributor.authorAndersen, Jens Oluf
dc.date.accessioned2019-10-17T12:17:14Z
dc.date.available2019-10-17T12:17:14Z
dc.date.created2012-10-03T10:35:54Z
dc.date.issued2012
dc.identifier.issn1126-6708
dc.identifier.urihttp://hdl.handle.net/11250/2622788
dc.description.abstractWe consider chiral perturbation theory for SU(2) at finite temperature T in a constant magnetic background B. We compute the thermal mass of the pions and the pion decay constant to leading order in chiral perturbation theory in the presence of the magnetic field. The magnetic field gives rise to a splitting between M π 0 and M π ± as well as between F π 0 and F π ±. We also calculate the free energy and the quark condensate to next-to-leading order in chiral perturbation theory. Both the pion decay constants and the quark condensate are decreasing slower as a function of temperature as compared to the case with vanishing magnetic field. The latter result suggests that the critical temperature T c for the chiral transition is larger in the presence of a constant magnetic field. The increase of T c as a function of B is in agreement with most model calculations but in disagreement with recent lattice calculations.nb_NO
dc.language.isoengnb_NO
dc.publisherSpringer Verlagnb_NO
dc.titleChiral perturbation theory in a magnetic background - finite-temperature effectsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.journalJournal of High Energy Physics (JHEP)nb_NO
dc.source.issue10nb_NO
dc.identifier.doi10.1007/JHEP10(2012)005
dc.identifier.cristin948360
dc.description.localcodeThis article will not be available due to copyright restrictions (c) 2012 by Springernb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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