Pion-Nucleon coupling at finite temperature
High Energy Physics - Phenomenology
2009-10-31 v1 Nuclear Theory
Abstract
The pion nucleon vertex function at finite temperature is studied in the framework of: (a) the thermal (linear) sigma model to leading (one-loop) order, and (b) a thermal QCD-Finite Energy Sum Rule. Results from both methods indicate that the strength of the pion-nucleon coupling decreases with increasing T, vanishing at a critical temperature. The associated mean-square radius is a monotonically increasing function of T, diverging at the critical temperature. This is interpreted as (analytical) evidence for the quark-gluon deconfinement phase transition.
Cite
@article{arxiv.hep-ph/9803469,
title = {Pion-Nucleon coupling at finite temperature},
author = {C. A. Dominguez and C. van Gend and M. Loewe},
journal= {arXiv preprint arXiv:hep-ph/9803469},
year = {2009}
}
Comments
14 pages, Latex2e file, 5 figures appended as 5 separate EPS files. Paper submitted to Phys. Lett. B