The chiral condensate in a constant electromagnetic field at O(p^6)

Details The chiral condensate in a constant electromagnetic field at O(p^6) The chiral condensate in a constant electromagnetic field at O(p^6)

2007-11-16

arxiv.org/abs/0711.2635v1

Phys.Rev.C77:065202,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 4 figures

Scientific paper

10.1103/PhysRevC.77.065202

We examine the shift in the chiral condensate due to a constant electromagnetic field at ${\cal O}(p^6)$ using SU(2) chiral perturbation theory and a realistic $M_\pi = 140 \textrm{MeV}$. We find that this value differs significantly from the value calculated using $M_\pi = 0$, while the magnitude of the two-loop correction is unclear due to the uncertainty in the experimentally determined value of the relevant ${\cal L}_6$ LEC.

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