Artículos de revistas
Vacuum energy and the fixed point of QED
Fecha
1990-12-01Registro en:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 250, n. 1-2, p. 139-142, 1990.
0370-2693
10.1016/0370-2693(90)91168-B
WOS:A1990EJ95900026
2-s2.0-0037802538
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The vacuum energy of QED, as a function of the coupling constant α, is shown to have an absolute minimum at the critical coupling αc=π/3. The effect of chiral symmetry breaking diminishes as the coupling is increased. We argue that these aspects of the vacuum energy shall remain unaltered beyond the ladder approximation.