Artículos de revistas
Pressure of massless hot scalar theory in the boundary effective theory framework
Fecha
2011Registro en:
PHYSICAL REVIEW D, v.83, n.8, 2011
1550-7998
10.1103/PhysRevD.83.085024
Autor
BESSA, A.
Brandt, Fernando Tadeu Caldeira
CARVALHO, C. A. A. de
FRAGA, E. S.
Institución
Resumen
We use the boundary effective theory approach to thermal field theory in order to calculate the pressure of a system of massless scalar fields with quartic interaction. The method naturally separates the infrared physics, and is essentially nonperturbative. To lowest order, the main ingredient is the solution of the free Euler-Lagrange equation with nontrivial (time) boundary conditions. We derive a resummed pressure, which is in good agreement with recent calculations found in the literature, following a very direct and compact procedure.