Chiral condensate, susceptibilities, critical coupling and indices in QED$_4$

Details Chiral condensate, susceptibilities, critical coupling and indices in QED$_4$ Chiral condensate, susceptibilities, critical coupling and indices in QED$_4$

1995-09-13

arxiv.org/abs/hep-lat/9509037v1

Nucl.Phys.Proc.Suppl. 47 (1996) 659-662

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, LaTeX file and postscript figures appended, talk presented at Lattice '95

Scientific paper

10.1016/0920-5632(96)00144-2

We measure chiral susceptibilities in the Coulomb phase of noncompact QED$_4$ in $8^4, 10^4$ and $12^4$ lattices. The MFA approach allows simulations in the chiral limit which are therefore free from arbitrary mass extrapolations. Using the critical couplings extracted from these calculations, we study the critical behaviour of the chiral condensate, which we find in disagreement with the predictions of logarithmically improved scalar Mean Field theory.

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