Isospin breaking and the chiral condensate

Details Isospin breaking and the chiral condensate Isospin breaking and the chiral condensate

2005-08-13

arxiv.org/abs/hep-lat/0508012v1

PoS LAT2005 (2005) 119

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 3 figures; contribution to the XXIIIrd International Symposium on Lattice Field Theory, 25-30 July 2005, Trinity Coll

Scientific paper

With two degenerate quarks, the chiral condensate exhibits a jump as the quark masses pass through zero. I discuss how this single transition splits into two Ising like transitions when the quarks are made non-degenerate. The order parameter is the expectation of the neutral pion field. The transitions represent long distance coherent phenomena occuring without the Dirac operator having vanishingly small eigenvalues.

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