TY - JOUR

T1 - Damping of ultrasoft fermions in finite temperature QED

AU - Abada, A.

AU - Bouakaz, K.

AU - Deghiche, D.

N1 - Funding Information:
★ Hagit Attiya is partially supported by the Israel Science Foundation (grant number 953/06). Alessia Milani is financed by ANR grant R-DISCOVER.

PY - 2007/4/20

Y1 - 2007/4/20

N2 - We calculate the fermion damping rates to second order in powers of the external momentum in the context of QED at finite temperature using the hard-thermal-loop summation scheme. We find the coefficients of zeroth and first orders finite whereas that of second-order logarithmically infrared sensitive. The calculation is done in covariant gauge and the result is independent of gauge fixing.

AB - We calculate the fermion damping rates to second order in powers of the external momentum in the context of QED at finite temperature using the hard-thermal-loop summation scheme. We find the coefficients of zeroth and first orders finite whereas that of second-order logarithmically infrared sensitive. The calculation is done in covariant gauge and the result is independent of gauge fixing.

KW - Infrared sensitivity

KW - QED hard thermal loops

KW - Ultrasoft fermion damping

UR - http://www.scopus.com/inward/record.url?scp=34147106508&partnerID=8YFLogxK

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U2 - 10.1142/S021773230702124X

DO - 10.1142/S021773230702124X

M3 - Article

AN - SCOPUS:34147106508

SN - 0217-7323

VL - 22

SP - 903

EP - 914

JO - Modern Physics Letters A

JF - Modern Physics Letters A

IS - 12

ER -