We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Two-flavor chiral perturbation theory at nonzero isospin: pion condensation at zero temperature.
- Authors
Adhikari, Prabal; Andersen, Jens O.; Kneschke, Patrick
- 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 χ PT.
- Subjects
CHIRAL perturbation theory; ISOBARIC spin; EQUATIONS of state; PIONS; CHEMICAL potential; CHIRALITY of nuclear particles; FLAVOR in particle physics
- Publication
European Physical Journal C -- Particles & Fields, 2019, Vol 79, Issue 10, pN.PAG
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-019-7381-4