Hlavná stránka > Instability of Non-Commutative SYM Theories at Finite Temperature |
Article | |
Report number | hep-th/0104133 ; CERN-TH-2001-106 ; ULB-TH-01-09 ; CERN-TH-2001-106 ; ULB-TH-2001-09 |
Title | Instability of Non-Commutative SYM Theories at Finite Temperature |
Related title | Supersymmetric Yang-Mills |
Author(s) | Landsteiner, Karl (CERN) ; Lopez, Esperanza (CERN) ; Tytgat, Michel H.G. (Brussels U.) |
Affiliation | (CERN) ; (Bruxelles Univ.) |
Publication | 2001 |
Imprint | 16 Apr 2001 |
Number of pages | 22 |
In: | JHEP 06 (2001) 055 |
DOI | 10.1088/1126-6708/2001/06/055 |
Subject category | Particle Physics - Theory |
Abstract | We extend our previous work on the quasi-particle excitations in N=4 non-commutative U(1) Yang-Mills theory at finite temperature. We show that above some critical temperature there is a tachyon in the spectrum of excitations. It is a collective transverse photon mode polarized in the non-commutative plane. Thus the theory seems to undergo a phase transition at high temperature. Furthermore we find that the group velocity of quasi-particles generically exceeds the speed of light at low momentum. |