Reliability of the Optimized Perturbation Theory for scalar fields at
finite temperature [PDF]
R. L. S. Farias, D. L. Teixeira Jr, R. O. RamosThe thermodynamics of a massless scalar field with a quartic interaction is studied up to third order in the Optimized Perturbation Theory (OPT) method. A comparison with other nonperturbative approaches is performed such that the reliability of OPT is accessed.View original: http://arxiv.org/abs/1211.7079
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