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The fermion mass at next-to-leading order in the HTL effective theory | | M.E. Carrington
; A. Gynther
; D. Pickering
; | | Date: |
2 May 2008 | | Abstract: | The calculation of the real part of a quasi-particle dispersion relation at
next-to-leading order in the hard thermal loop effective theory is a very
difficult problem. Even though the hard thermal loop effective theory is almost
20 years old, there is only one next-to-leading order calculation of the real
part of a quasi-particle dispersion relation in the literature. In this paper,
we calculate the fermion mass in QED and QCD at next-to-leading order. For QED
the result is M=eT/sqrt{8} * [1-(1.427 pm 0.02)e/4pi] and for QCD with N_f=2
and N_c=3 we obtain M=gT/sqrt{6} * [1+(1.867 pm 0.02)g/4pi]. | | Source: | arXiv, 0805.0170 | | Services: | Forum | Review | PDF | Favorites | |
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