dc.contributor.author | Andersen, Jens Oluf | |
dc.date.accessioned | 2021-10-26T08:37:42Z | |
dc.date.available | 2021-10-26T08:37:42Z | |
dc.date.created | 2021-06-16T17:41:26Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0143-0807 | |
dc.identifier.uri | https://hdl.handle.net/11250/2825575 | |
dc.description.abstract | Magnetic catalysis is the enhancement of a condensate due to the presence of an external magnetic field. Magnetic catalysis at T=0 is a robust phenomenon in low-energy theories and models of QCD as well as in lattice simulations. We review the underlying physics of magnetic catalysis from both perspectives. The quark-meson model is used as a specific example of a model that exhibits magnetic catalysis. Regularization and renormalization are discussed and we pay particular attention to a consistent and correct determination of the parameters of the Lagrangian using the on-shell renormalization scheme. A straightforward application of the quark-meson model and the NJL model leads to the prediction that the chiral transition temperature Tχ is increasing as a function of the magnetic field B. This is in disagreement with lattice results, which show that Tχ is a decreasing function of B, independent of the pion mass. The behavior can be understood in terms of the so-called valence and sea contributions to the quark condensate and the competition between them. We critically examine these ideas as well recent attempts to improve low-energy models using lattice input. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | QCD phase diagram in a constant magnetic background: Inverse magnetic catalysis: where models meet the lattice | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.journal | European Journal of Physics | en_US |
dc.identifier.doi | 10.1140/epja/s10050-021-00491-y | |
dc.identifier.cristin | 1916256 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |