dc.contributor.author | Adhikari, Prabal | |
dc.contributor.author | Andersen, Jens Oluf | |
dc.contributor.author | Kneschke, Patrick | |
dc.date.accessioned | 2020-01-15T10:16:33Z | |
dc.date.available | 2020-01-15T10:16:33Z | |
dc.date.created | 2019-10-28T14:01:09Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | European Physical Journal C. 2019, 79 (10), . | nb_NO |
dc.identifier.issn | 1434-6044 | |
dc.identifier.uri | http://hdl.handle.net/11250/2636379 | |
dc.description.abstract | In this paper, we calculate the equation of state of two-flavor finite isospin chiral perturbation theory at next-to-leading order in the pion-condensed phase at zero temperature. We show that the transition from the vacuum phase to a Bose-condensed phase is of second order. While the tree-level result has been known for some time, surprisingly quantum effects have not yet been incorporated into the equation of state. We find that the corrections to the quantities we compute, namely the isospin density, pressure, and equation of state, increase with increasing isospin chemical potential. We compare our results to recent lattice simulations of 2 + 1 flavor QCD with physical quark masses. The agreement with the lattice results is generally good and improves somewhat as we go from leading order to next-to-leading order in χPT. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Springer | nb_NO |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Two-flavor chiral perturbation theory at nonzero isospin: Pion condensation at zero temperature | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 13 | nb_NO |
dc.source.volume | 79 | nb_NO |
dc.source.journal | European Physical Journal C | nb_NO |
dc.source.issue | 10 | nb_NO |
dc.identifier.doi | 10.1140/epjc/s10052-019-7381-4 | |
dc.identifier.cristin | 1741219 | |
dc.description.localcode | © The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | nb_NO |
cristin.unitcode | 194,66,20,0 | |
cristin.unitname | Institutt for fysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |