Pion condensation in a dense neutrino gas

0339463 - ÚJF 2010 RIV US eng J - Journal Article
Abuki, H. - Brauner, Tomáš - Warringa, H. J.
Pion condensation in a dense neutrino gas.
European Physical Journal C. Roč. 64, č. 1 (2009), s. 123-131. ISSN 1434-6044. E-ISSN 1434-6052
Institutional research plan: CEZ:AV0Z10480505
Keywords : QCD PHASE-DIAGRAM * QUARK MATTER * BARYON DENSITY
Subject RIV: BE - Theoretical Physics
Impact factor: 2.746, year: 2009

We argue that using an equilibrated gas of neutrinos it is possible to probe the phase diagram of QCD for finite isospin and small baryon chemical potentials. We discuss this region of the phase diagram in detail and demonstrate that for large enough neutrino densities a Bose-Einstein condensate of positively charged pions arises. Moreover, we show that for non-zero neutrino density the degeneracy in the lifetimes and masses of the charged pions is lifted.
Permanent Link: http://hdl.handle.net/11104/0182982