Phys. Rev. Lett. 30, 1340–1342 (1973)Pion Condensation in Nuclear and Neutron Star MatterReceived 13 April 1973; published in the issue dated 25 June 1973 The equilibrium thermodynamic conditions obeyed by a pion condensed system are given. These include the statement that the average spatial currents of conserved quantities must always vanish in the state of lowest free energy, even for π- condensation into a running-wave mode. The physical significance of pion-condensation thresholds is also discussed. © 1973 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.30.1340
DOI:
10.1103/PhysRevLett.30.1340
PACS:
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