期刊
PHYSICAL REVIEW LETTERS
卷 108, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.121601
关键词
-
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [23340067]
- JSPS
We derive some rigorous results on the chiral phase transition in QCD and QCD-like theories with a large number of colors, N-c, based on the QCD inequalities and the large-N-c orbifold equivalence. We show that critical phenomena and associated soft modes are forbidden in flavor-symmetric QCD at finite temperature T and finite but not so large quark chemical potential mu for any nonzero quark mass. In particular, the critical point in QCD at a finite baryon chemical potential mu(B) = N-c mu is ruled out, if the coordinate (T, mu) is outside the pion condensed phase in the corresponding phase diagram of QCD at a finite isospin chemical potential mu(I) = 2 mu.
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