Comment on "Effective string tension in the finite-temperature smooth-string model"

1989 ◽  
Vol 40 (12) ◽  
pp. 4199-4200 ◽  
Author(s):  
G. Germán ◽  
H. Kleinert
2012 ◽  
Author(s):  
Pedro Bicudo ◽  
N. Cardoso ◽  
Orlando Oliveira ◽  
Paulo Silva

1999 ◽  
Vol 14 (16) ◽  
pp. 2475-2493 ◽  
Author(s):  
A. ARMONI ◽  
J. SONNENSCHEIN ◽  
Y. FRISHMAN

We review and elaborate on properties of the string tension in two-dimensional gauge theories. The first model we consider is massive QED in the m≪e limit. We evaluate the leading string tension both in the fermionic and bosonized descriptions. We discuss the next-to-leading corrections in m/e. The next-to-leading terms in the long distance behavior of the quark–antiquark potential, are evaluated in a certain region of external versus dynamical charges. The finite temperature behavior is also determined. In QCD 2 we review the results for the string tension of quarks in cases with dynamical quarks in the fundamental, adjoint, symmetric and antisymmetric representations. The screening nature of SYM 2 is re-derived.


2008 ◽  
Vol 19 (07) ◽  
pp. 1079-1093 ◽  
Author(s):  
ALEXANDER VELYTSKY

We examine SU(2) gauge theory in 3 + 1 dimensions at finite temperature in the vicinity of critical point. For various lattice sizes in time direction (Nτ = 1, 2, 4, 8) we extract high precision values of the inverse critical coupling and critical values of the 4th order cumulant of Polyakov loops (Binder cumulant). We check the universality class of the theory by comparing the cumulant values to that of the 3D Ising model and find very good agreement. The Polyakov loop correlators for the indicated lattices are also measured and the string tension values extracted. The high precision values of critical coupling and string tension allow us to study the scaling of dimensionless [Formula: see text] ratio. The violation of scaling by < 10% is observed as the coupling is varied from weak to strong coupling regime.


2003 ◽  
Vol 18 (08) ◽  
pp. 1497-1500
Author(s):  
HONG CHAI ◽  
MASAHARU IWASAKI

We study quarkonium at finite temperature by using a hadron string model. It is shown that as the temperature is increased, the mass of the quarkonium decreases and the slope of the Regge trajectory is changed.


1991 ◽  
Vol 06 (20) ◽  
pp. 1815-1823 ◽  
Author(s):  
G. GERMÁN

We survey some developments in the theory of strings with extrinsic curvature stiffness proposed by Polyakov and Kleinert. Particular attention is devoted to work on the static quark potential, the string tension at finite temperature and the thermal deconfinement properties of the model.


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