Finite temperature corrections to weak rates prior to nucleosynthesis

Details Finite temperature corrections to weak rates prior to nucleosynthesis Finite temperature corrections to weak rates prior to nucleosynthesis

2000-06-26

arxiv.org/abs/astro-ph/0006370v3

Phys.Rev.D63:083503,2001

Astronomy and Astrophysics

Astrophysics

38 pages, 3 figures Two typos corrected

Scientific paper

10.1103/PhysRevD.63.083503

We have reexamined the electromagnetic corrections to the weak interaction rates for the transformation of neutrons to protons, and protons to neutrons, in the early universe, before freeze-out. We derive compact expressions for these rates in terms of thermal expectation values of products of fields, and we give explicit constructions of the terms to order e^2. We disagree in several respects with results in the literature.

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