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Article overview
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Fermion Spectrum at Ultrasoft Region in a Hot QED/QCD Plasma | Daisuke Satow
; Yoshimasa Hidaka
; | Date: |
1 Sep 2011 | Abstract: | An spectrum of an electron (quark) with ultrasoft momentum (p g^2T) is
discussed at extremely high temperature in quantum electrodynamics
(chromodynamics) with a resummed perturbation theory. We establish the
existence of the pole suggested in the previous work of the electron (quark)
propagator at ultrasoft region, and find that its pole position is p_0=mp
|p|/3-izeta, where zeta is the damping rate which is of order g^2T ln 1/g,
and the expression of its residue. We also discuss whether the resummation
scheme preserves the gauge symmetry. | Source: | arXiv, 1109.0088 | Services: | Forum | Review | PDF | Favorites |
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