Shear viscosity in a gluon gas

被引:119
作者
Xu, Zhe [1 ]
Greiner, Carsten [1 ]
机构
[1] Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany
关键词
D O I
10.1103/PhysRevLett.100.172301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The relation of the shear viscosity coefficient to the recently introduced transport rate is derived within relativistic kinetic theory. We calculate the shear viscosity over entropy ratio eta/s for a gluon gas, which involves elastic gg -> gg perturbative QCD (PQCD) scatterings as well as inelastic gg <-> ggg PQCD bremsstrahlung. For alpha(s)=0.3 we find eta/s=0.13 and for alpha(s)=0.6, eta/s=0.076. The small eta/s values, which suggest strongly coupled systems, are due to the gluon bremsstrahlung incorporated.
引用
收藏
页数:4
相关论文
共 30 条
[1]  
Adams J, 2004, PHYS REV LETT, V92, DOI 10.1103/PhysRevLett.92.052302
[2]   Elliptic flow of identified hadrons in Au+Au collisions at √sNN=200 GeV -: art. no. 182301 [J].
Adler, SS ;
Afanasiev, S ;
Aidala, C ;
Ajitanand, NN ;
Akiba, Y ;
Alexander, J ;
Amirikas, R ;
Aphecetche, L ;
Aronson, SH ;
Averbeck, R ;
Awes, TC ;
Azmoun, R ;
Babintsev, V ;
Baldisseri, A ;
Barish, KN ;
Barnes, PD ;
Bassalleck, B ;
Bathe, S ;
Batsouli, S ;
Baublis, V ;
Bazilevsky, A ;
Belikov, S ;
Berdnikov, Y ;
Bhagavatula, S ;
Boissevain, JG ;
Borel, H ;
Borenstein, S ;
Brooks, ML ;
Brown, DS ;
Bruner, N ;
Bucher, D ;
Buesching, H ;
Bumazhnov, V ;
Bunce, G ;
Burward-Hoy, JM ;
Butsyk, S ;
Camard, X ;
Chai, JS ;
Chand, P ;
Chang, WC ;
Chernichenko, S ;
Chi, CY ;
Chiba, J ;
Chiu, M ;
Choi, IJ ;
Choi, J ;
Choudhury, RK ;
Chujo, T ;
Cianciolo, V ;
Cobigo, Y .
PHYSICAL REVIEW LETTERS, 2003, 91 (18)
[3]   Transport coefficients in high temperature gauge theories, 1. Leading-log results [J].
Arnold, P ;
Moore, GD ;
Yaffe, LG .
JOURNAL OF HIGH ENERGY PHYSICS, 2000, (11)
[4]   Transport coefficients in high temperature gauge theories, 2. Beyond leading log [J].
Arnold, P ;
Moore, GD ;
Yaffe, LG .
JOURNAL OF HIGH ENERGY PHYSICS, 2003, (05) :1215-1255
[5]   Anomalous transport processes in anisotropically expanding Quark-Gluon plasmas [J].
Asakawa, Masayuki ;
Bass, Steffen A. ;
Mueller, Berndt .
PROGRESS OF THEORETICAL PHYSICS, 2006, 116 (04) :725-755
[6]   Radiative energy loss of high energy quarks and gluons in a finite-volume quark-gluon plasma [J].
Baier, R ;
Dokshitzer, YL ;
Mueller, AH ;
Peigne, S ;
Schiff, D .
NUCLEAR PHYSICS B, 1997, 483 (1-2) :291-320
[7]   Bottom-up thermalization in heavy ion collisions [J].
Baier, R ;
Mueller, AH ;
Schiff, D ;
Son, DT .
PHYSICS LETTERS B, 2001, 502 (1-4) :51-58
[8]   N-BODY COLLISIONS IN HIGH-ENERGY NUCLEAR-REACTIONS [J].
BATKO, G ;
RANDRUP, J ;
VETTER, T .
NUCLEAR PHYSICS A, 1992, 536 (3-4) :786-822
[9]   MANY-BODY THEORY FOR QUANTUM KINETIC EQUATIONS [J].
BEZZERIDES, B ;
DUBOIS, DF .
PHYSICAL REVIEW, 1968, 168 (01) :233-+
[10]   PARTON EQUILIBRATION IN RELATIVISTIC HEAVY-ION COLLISIONS [J].
BIRO, TS ;
VANDOORN, E ;
MULLER, B ;
THOMA, MH ;
WANG, XN .
PHYSICAL REVIEW C, 1993, 48 (03) :1275-1284