Positivity and dense matter

Physical Review D

Volumn 68, Issue 3, 2003, Pages

  Hong, Deog Ki ^a   Hsu, Stephen D H ^b  

^a Pusan National University   (South Korea)

^b UNIVERSITY OF OREGON   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CONDUCTANCE; ELECTRONICS; ELEMENTARY PARTICLE; ENERGY; MOLECULAR MODEL; MONTE CARLO METHOD; QUANTUM MECHANICS; VACUUM;

EID: 4744357481     PISSN: 05562821     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevD.68.034011     Document Type: Article

References (38)

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38. To investigate spontaneous symmetry breaking, one ordinarily has to start at finite volume and insert a source which explicitly breaks the symmetry. The source is removed only after the infinite volume limit is taken. We stress that the source does not have to be a quark mass (it could be a higher dimension operator), so one can investigate symmetry breaking even when the quark mass is exactly zero throughout the calculalion. (To be precise, a quark mass does not explicitly violate vector symmetries, so it cannot play the role of the source in the thermodynamic limit needed here.)