SHEAR VISCOSITY OF HOT QGP AT FINITE CHEMICAL POTENTIAL

2008 ◽  
Vol 23 (31) ◽  
pp. 2699-2710
Author(s):  
HUI LIU ◽  
DEFU HOU ◽  
JIARONG LI

The shear viscosity of quark–gluon plasma (QGP) at leading logarithm order at finite temperature and chemical potential in weakly coupled limit is studied by solving transport equations. The result shows that the chemical potential effect adds a positive μ2/T2 correction to the pure temperature case and thus increases the shear viscosity.

2021 ◽  
Vol 81 (11) ◽  
Author(s):  
M. Bordag ◽  
V. Skalozub

AbstractIn the present paper, we return to the problem of spontaneous generation of the $$A_0$$ A 0 -background field in QCD at finite temperature and a quark chemical potential, $$\mu $$ μ . On the lattice, this problem was studied by different approaches where an analytic continuation to the imaginary potential $$i \mu $$ i μ has been used. Here we consider both, real and imaginary chemical potential, analytically within the two-loop gauge-fixing independent effective potential $$W_{eff.}$$ W e f f . . We realize the gauge independence in to ways: (1) on the base of Nielsen’s identity and (2) expressing the potential in terms of Polyakov’s loop. Firstly we reproduce the known expressions in terms of Bernoulli’s polynomials for the gluons and quarks. Then, we calculate the $$\mu $$ μ -dependence, either for small $$\mu $$ μ as expansion or numerically for finite $$\mu $$ μ , real and imaginary. One result is that the chemical potential only weakly changes the values of the condensate fields, but quite strongly deepens the minima of the effective potential. We investigate the dependence of Polyakov’s loop in the minimum of the effective potential, thermodynamic pressure and Debye’s mass on the chemical potential. Comparisons with other results are given.


Open Physics ◽  
2014 ◽  
Vol 12 (11) ◽  
Author(s):  
Wanda Alberico ◽  
Stefano Carignano ◽  
Piotr Czerski ◽  
Arturo Pace ◽  
Marzia Nardi ◽  
...  

AbstractWe extend a previous work on the study of heavy charmonia and bottomonia in a deconfined quark-gluon plasma by considering the B c family of mesons. With the introduction of this bound state of a charm and a beauty quark, we investigate at finite temperature the behavior of the quarkonium, in an energy region between the ψ and the Y states.


2013 ◽  
Vol 103 (5) ◽  
pp. 52001
Author(s):  
Nana Guan ◽  
Jiali Long ◽  
Yugang Ma ◽  
Ying Yuan

Sign in / Sign up

Export Citation Format

Share Document