Can a strong magnetic background modify the nature of the chiral transition in QCD?

被引：39

作者：

Fraga, Eduardo S. ^{[1
]}

Mizher, Ana Julia ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil

来源：

NUCLEAR PHYSICS A | 2009年 / 820卷

关键词：

Phase diagram of QCD; Chiral transition; Magnetic field; JONA-LASINIO MODEL; SYMMETRY-BREAKING; DIMENSIONAL REDUCTION; QUARK;

D O I：

10.1016/j.nuclphysa.2009.01.026

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The presence of a strong magnetic background can modify the nature and the dynamics of the chiral phase transition at finite temperature: for high enough magnetic fields, comparable to the ones expected to be created in noncentral high-energy heavy ion collisions at RHIC and the LHC, the original crossover is turned into a first-order transition. We illustrate this effect within the linear sigma, model with quarks to one loop in the (MS) over bar scheme for N-f = 2.

引用

页码：103C / 106C

页数：4

共 27 条

[1] The quark and gluon condensates and low-energy QCD theorems in a magnetic field [J].

Agasian, NO ;

Shushpanov, IA .

PHYSICS LETTERS B, 2000, 472 (1-2) :143-149

[2]

AGASIAN NO, ARXIV08033156

[3]

[Anonymous], 2006, ROM REP PHYS

[4] Chiral symmetry breaking in the Nambu-Jona-Lasinio model in external constant electromagnetic field [J].

Babansky, AY ;

Gorbar, EV ;

Shchepanyuk, GV .

PHYSICS LETTERS B, 1998, 419 (1-4) :272-278

[5] Post-perovskite phase in selected sesquioxides from density-functional calculations [J].

Caracas, Razvan ;

Cohen, R. E. .

PHYSICAL REVIEW B, 2007, 76 (18)

[6] FORMATION OF VERY STRONGLY MAGNETIZED NEUTRON-STARS - IMPLICATIONS FOR GAMMA-RAY BURSTS [J].

DUNCAN, RC ;

THOMPSON, C .

ASTROPHYSICAL JOURNAL, 1992, 392 (01) :L9-L13

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

Fraga, Eduardo S. ;

Mizher, Ana Julia .

PHYSICAL REVIEW D, 2008, 78 (02)

[8] Can dissipation prevent explosive decomposition in high-energy heavy ion collisions? [J].

Fraga, ES ;

Krein, G .

PHYSICS LETTERS B, 2005, 614 (3-4) :181-186

[9]

Fukushima K., ARXIV08083382

[10] THE AXIAL VECTOR CURRENT IN BETA-DECAY [J].

GELLMANN, M ;

LEVY, M .

NUOVO CIMENTO, 1960, 16 (04) :705-726

← 1 2 3 →