Phase diagram of chirally imbalanced QCD matter

被引：67

作者：

Chernodub, M. N. ^{[1
,2
]}

Nedelin, A. S. ^{[3
,4
]}

机构：

[1] Univ Tours, CNRS, Lab Math & Phys Theor, F-37200 Tours, France

[2] Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium

[3] Uppsala Univ, Dept Phys & Astron, S-75108 Uppsala, Sweden

[4] Inst Theoret & Expt Phys, Moscow 117259, Russia

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 10期

关键词：

MODEL; U(1);

D O I：

10.1103/PhysRevD.83.105008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compute the QCD phase diagram in the plane of the chiral chemical potential and temperature using the linear sigma model coupled to quarks and to the Polyakov loop. The chiral chemical potential accounts for effects of imbalanced chirality due to QCD sphaleron transitions which may emerge in heavy-ion collisions. We found three effects caused by the chiral chemical potential: the imbalanced chirality (i) tightens the link between deconfinement and chiral phase transitions; (ii) lowers the common critical temperature; (iii) strengthens the order of the phase transition by converting the crossover into the strong first order phase transition passing via the second order end point. Since the fermionic determinant with the chiral chemical potential has no sign problem, the chirally imbalanced QCD matter can be studied in numerical lattice simulations.

引用

页数：6

共 29 条

[1] Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions [J].

Abelev, B. I. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alakhverdyants, A. V. ;

Anderson, B. D. ;

Arkhipkin, D. ;

Averichev, G. S. ;

Balewski, J. ;

Barannikova, O. ;

Barnby, L. S. ;

Baumgart, S. ;

Beavis, D. R. ;

Bellwied, R. ;

Benedosso, F. ;

Betancourt, M. J. ;

Betts, R. R. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Biritz, B. ;

Bland, L. C. ;

Bnzarov, I. ;

Bonner, B. E. ;

Bouchet, J. ;

Braidot, E. ;

Brandin, A. V. ;

Bridgeman, A. ;

Bruna, E. ;

Bueltmann, S. ;

Burton, T. P. ;

Cai, X. Z. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Catu, O. ;

Cebra, D. ;

Cendejas, R. ;

Cervantes, M. C. ;

Chajecki, Z. ;

Chaloupka, P. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Choi, K. E. ;

Christie, W. .

PHYSICAL REVIEW C, 2010, 81 (05)

[2] Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation [J].

Abelev, B. I. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alakhverdyants, A. V. ;

Anderson, B. D. ;

Arkhipkin, D. ;

Averichev, G. S. ;

Balewski, J. ;

Barannikova, O. ;

Barnby, L. S. ;

Baumgart, S. ;

Beavis, D. R. ;

Bellwied, R. ;

Benedosso, F. ;

Betancourt, M. J. ;

Betts, R. R. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Biritz, B. ;

Bland, L. C. ;

Bnzarov, I. ;

Bonner, B. E. ;

Bouchet, J. ;

Braidot, E. ;

Brandin, A. V. ;

Bridgeman, A. ;

Bruna, E. ;

Bueltmann, S. ;

Burton, T. P. ;

Cai, X. Z. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Catu, O. ;

Cebra, D. ;

Cendejas, R. ;

Cervantes, M. C. ;

Chajecki, Z. ;

Chaloupka, P. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Choi, K. E. ;

Christie, W. .

PHYSICAL REVIEW LETTERS, 2009, 103 (25)

[3] PSEUDOPARTICLE SOLUTIONS OF YANG-MILLS EQUATIONS [J].

BELAVIN, AA ;

POLYAKOV, AM ;

SCHWARTZ, AS ;

TYUPKIN, YS .

PHYSICS LETTERS B, 1975, 59 (01) :85-87

[4] High temperature CP-restoring phase transition at θ = π [J].

Boomsma, Jorn K. ;

Boer, Daniel .

PHYSICAL REVIEW D, 2009, 80 (03)

[5] Spontaneous Electromagnetic Superconductivity of Vacuum in a Strong Magnetic Field: Evidence from the Nambu-Jona-Lasinio Model [J].

Chernodub, M. N. .

PHYSICAL REVIEW LETTERS, 2011, 106 (14)

[6] Superconductivity of QCD vacuum in strong magnetic field [J].

Chernodub, M. N. .

PHYSICAL REVIEW D, 2010, 82 (08)

[7] QCD phase transition in a strong magnetic background [J].

D'Elia, Massimo ;

Mukherjee, Swagato ;

Sanfilippo, Francesco .

PHYSICAL REVIEW D, 2010, 82 (05)

[8] Chiral transition in a strong magnetic background [J].

Fraga, Eduardo S. ;

Mizher, Ana Julia .

PHYSICAL REVIEW D, 2008, 78 (02)

[9] Chiral effective model with the Polyakov loop [J].

Fukushima, K .

PHYSICS LETTERS B, 2004, 591 (3-4) :277-284

[10] Chiral magnetic effect [J].

Fukushima, Kenji ;

Kharzeev, Dmitri E. ;

Warringa, Harmen J. .

PHYSICAL REVIEW D, 2008, 78 (07)

← 1 2 3 →