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Momentum dependence of the spectral functions in the O(4) linear sigma model at finite temperature

Yoshimasa Hidaka·Osamu Morimatsu·Tetsuo Nishikawa
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Abstract

The spatial momentum dependence of the spectral function for pi and sigma at finite temperature is studied by employing the O(4) linear sigma model and adopting a resummation technique called optimized perturbation theory (OPT).

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Yoshimasa Hidaka, Osamu Morimatsu, Tetsuo Nishikawa. 2003-04-09. Momentum dependence of the spectral functions in the O(4) linear sigma model at finite temperature. https://doi.org/10.1103/physrevd.67.056004

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