Quark and pion condensates at finite isospin density in chiral perturbation theory - INSPIRE

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Quark and pion condensates at finite isospin density in chiral perturbation theory

Mar 27, 2020

10 pages

Published in:

Eur.Phys.J.C 80 (2020) 11, 1028

Published: Nov 6, 2020

e-Print:

2003.12567 [hep-ph]

DOI:

10.1140/epjc/s10052-020-08574-8

View in:

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Abstract: (Springer)

In this paper, we consider two-flavor QCD at zero temperature and finite isospin chemical potential

\mu _I

using a model-independent analysis within chiral perturbation theory at next-to-leading order. We calculate the effective potential, the chiral condensate and the pion condensate in the pion-condensed phase at both zero and nonzero pionic source. We compare our finite pionic source results for the chiral condensate and the pion condensate with recent (2+1)-flavor lattice QCD results. Agreement with lattice results generally improves as one goes from leading order to next-to-leading order.

Note:

10 pages, 4 figures, includes updated figures and corrected typos

pi: condensation
condensation: chiral
perturbation theory: chiral
potential: chemical
isospin: density
temperature: 0
higher-order: 1
quantum chromodynamics
flavor: 2
lattice field theory

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