Otro
Relating a gluon mass scale to an infrared fixed point in pure gauge QCD
Registro en:
Physical Review Letters, v. 90, n. 15, 2003.
0031-9007
10.1103/PhysRevLett.90.152001
WOS:000182320200007
2-s2.0-0037526520.pdf
2-s2.0-0037526520
Autor
Aguilar, A. C.
Natale, A. A.
Rodrigues da Silva, P. S.
Resumen
The condition for the global minimum of the vacuum energy for a non-Abelian gauge theory with a dynamically generated gauge boson mass scale which implies the existence of a nontrivial IR fixed point of the theory was shown. Thus, this vacuum energy depends on the dynamical masses through the nonperturbative propagators of the theory. The results show that the freezing of the QCD coupling constant observed in the calculations can be a natural consequence of the onset of a gluon mass scale, giving strong support to their claim.