Pressure of massless hot scalar theory in the boundary effective theory framework
| Autor: | Bessa, A., Brandt, F. T., de Carvalho, C. A. A., Fraga, E. S. |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Phys.Rev.D83:085024,2011 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.83.085024 |
| Popis: | We use the boundary effective theory (BET) 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 non-perturbative. To lowest order, the main ingredient is the solution of the free Euler-Lagrange equation with non-trivial (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. Comment: 10 pages, 4 figures |
| Databáze: | arXiv |
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