Pion masses in two-flavor QCD with η condensation

We investigate some aspects of two-flavor QCD with mu≠md at low energy, using the leading order chiral perturbation theory including anomaly effects. While nothing special happens at mu=0 for the fixed md≠0, the neutral pion mass becomes zero at two critical values of mu, between which the neutral p...

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Veröffentlicht in:	Physical Review Letters 2014-04, Vol.112 (14), p.141603-141603, Article 141603
Hauptverfasser:	Aoki, Sinya, Creutz, Michael
Format:	Artikel
Sprache:	eng
Schlagworte:	CP FLAVOR HET lattice PHYSICS OF ELEMENTARY PARTICLES AND FIELDS pion PIONS QCD QUANTUM CHROMODYNAMICS
Online-Zugang:	Volltext
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