Vacuum free energy, quark condensate shifts and magnetization in three-flavor chiral perturbation theory to 0(p6) in a uniform magnetic field

被引：0

作者：

Adhikari, Prabal ^{[1
,3
]}

Strumke, Inga ^{[2
]}

机构：

[1] St Olaf Coll, Fac Nat Sci & Math, Phys Dept, 1520 St Olaf Ave, Northfield, MN 55057 USA

[2] Norwegian Univ Sci & Technol, Fac Informat Technol & Elect Engn, Dept Comp Sci, NTNU, Sem Saelandsvei 9, N-7491 Trondheim, Norway

[3] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

NUCLEAR PHYSICS B | 2023年 / 997卷

基金：

美国国家科学基金会;

关键词：

SYMMETRY-BREAKING; NONZERO TEMPERATURE; 3-DIMENSIONAL GROSS; NEVEU MODEL; CATALYSIS;

D O I：

10.1016/j.nuclphysb.2023.116389

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study three-flavor QCD in a uniform magnetic field using chiral perturbation theory (xPT). We construct the vacuum free energy density, quark condensate shifts induced by the magnetic field and the renormalized magnetization to 0(p6) in the chiral expansion. We find that the calculation of the free energy is greatly simplified by cancellations among two-loop diagrams involving charged mesons. In comparing our results with recent 2 + 1 -flavor lattice QCD data, we find that the light quark condensate shift at 0(p6) is in better agreement than the shift at 0(p4). We also find that the renormalized magnetization, due to its small-ness, possesses large uncertainties at 0(p6) due to the uncertainties in the low-energy constants.

引用

页数：14