168 citations · 188 across the 3 of their papers we have counts for
4 papers
Optimized Perturbation Theory at Finite Temperature--- Two-Loop Analysis---
S. Chiku
We study the optimized perturbation theory (OPT) at finite temperature, which is a self-consistent resummation method. Firstly, we generalize the idea of the OPT to optimize the co…
Optimized Perturbation Theory at Finite Temperature --- Renormalization and Nambu-Goldstone theorem in O(N) phi^4 Theory ---
S. Chiku, T. Hatsuda
The optimized perturbation theory (OPT) at finite temperature recently developed by the present authors is reviewed by using O(N) phi^4 theory with spontaneous symmetry breaking. T…
Optimized Perturbation Theory at Finite Temperature
S. Chiku, T. Hatsuda
An optimized perturbation theory (OPT) at finite temperature T, which resums higher order terms in the naive perturbation, is developed in O(N) phi^4 theory. It is proved that (i)…
Soft Modes associated with Chiral Transition at Finite Temperature
S. Chiku, T. Hatsuda
Using a novel resummation procedure of thermal loops, real-time correlations in the scalar and pseudo-scalar channels are studied in the O(4) linear sigma model at finite temperatu…