Show simple item record

dc.contributor.authorGrønli, Martin Spillum
dc.contributor.authorBrauner, Tomas
dc.identifier.citationGrønli, M.S., Brauner, T. (2022) Competition of chiral soliton lattice and Abrikosov vortex lattice in QCD with isospin chemical potential. European Physical Journal C, 82:354en_US
dc.description.abstractWe investigate the thermodynamics of two-flavor quark matter in presence of nonzero isospin chemical potential and external magnetic field. It is known that at sufficiently high isospin chemical potential, charged pions undergo Bose–Einstein condensation (BEC). The condensate behaves as a superconductor, exhibiting Meissner effect in weak external magnetic fields. Stronger fields stress the superconducting state, turning it first into an Abrikosov lattice of vortices, and eventually destroying the condensate altogether. On the other hand, for sufficiently strong magnetic fields and low-to-moderate isospin chemical potential, the ground state of quantum chromodynamics (QCD) is expected to be a spatially modulated condensate of neutral pions, induced by the chiral anomaly: the chiral soliton lattice (CSL). We map the phase diagram of QCD as a function of isospin chemical potential and magnetic field in the part of the parameter space accessible to a low-energy effective field theory description of QCD. Our main result is an explicit account of the competition between the CSL and the Abrikosov vortex lattice. This is accomplished by adopting a fast numerical algorithm for finding the vortex lattice solution of the equation of motion and the corresponding Gibbs energy. We find that the Abrikosov vortex lattice phase persists in the phase diagram, separating the uniform charged pion BEC phase from the CSL phase. The precise layout of the phase diagram depends sensitively on the choice of the vacuum pion mass.en_US
dc.publisherSpringer Nature Switzerland AGen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectteoretisk fysikken_US
dc.titleCompetition of chiral soliton lattice and Abrikosov vortex lattice in QCD with isospin chemical potentialen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© The Author(s) 2022en_US
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430en_US
dc.source.journalEuropean Physical Journal Cen_US
dc.source.articlenumber354 (2002)en_US

Files in this item


This item appears in the following Collection(s)

Show simple item record

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