Searching for the BCS phase at nonzero isospin asymmetry
- According to perturbation theory predictions, QCD matter in the zero-temperature, high-density limits of QCD at nonzero isospin chemical potential is expected to be in a superfluid Bardeen-Cooper-Schrieffer (BCS) phase of u and d¯ Cooper pairs. It is also expected, on symmetry grounds, that such phase connects via an analytical crossover to the phase with Bose-Einstein condensation (BEC) of charged pions at μI≥mπ/2. With lattice results, showing some indications that the deconfinement crossover also smoothly penetrates the BEC phase, the conjecture was made that the former connects continuously to the BEC-BCS crossover. We compute the spectrum of the Dirac operator, and use generalized Banks-Casher relations, to test this conjecture and identify signatures of the superfluid BCS phase.
Author: | Bastian Benjamin BrandtORCiDGND, Francesca CuteriORCiD, Gergely EndrődiORCiDGND |
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URN: | urn:nbn:de:hebis:30:3-704582 |
DOI: | https://doi.org/10.48550/arXiv.2112.11113 |
ArXiv Id: | http://arxiv.org/abs/2112.11113 |
Document Type: | Conference Proceeding |
Language: | English |
Date of Publication (online): | 2021/12/21 |
Date of first Publication: | 2021/12/21 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Contributing Corporation: | International Symposium on Lattice Field Theory (38. : 2021 : Online) |
Release Date: | 2023/01/24 |
Page Number: | 8 |
HeBIS-PPN: | 504852787 |
Institutes: | Physik / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - CC BY-NC-SA - Namensnennung - Nicht kommerziell - Weitergabe unter gleichen Bedingungen 4.0 International |