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arXiv · 0711.2635

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

Elizabeth S. Werbos
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Abstract

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 $M_π= 140 \textrm{MeV}$. We find that this value differs significantly from the value calculated using $M_π= 0$, 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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Elizabeth S. Werbos. 2007-11-16. The chiral condensate in a constant electromagnetic field at O(p^6). https://doi.org/10.1103/physrevc.77.065202

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