Vertex renormalization of weak interactions in compact stars: beyond leading order
Solar and Stellar Astrophysics
2012-08-14 v3 Nuclear Theory
Abstract
Neutrino emission rate from baryonic matter in neutron stars via weak neutral vector interaction is computed up to order O(v_F^6), where v_F is the Fermi velocity in units of speed of light. The vector current polarization tensors are evaluated with full vertices which include resummed series in the particle-hole channel. The neutrino emissivity is enhanced compared to the O(v_F^4) order up of 10% for values v_F< 0.4 characteristic to baryons in compact stars.
Keywords
Cite
@article{arxiv.1201.1394,
title = {Vertex renormalization of weak interactions in compact stars: beyond leading order},
author = {Armen Sedrakian},
journal= {arXiv preprint arXiv:1201.1394},
year = {2012}
}
Comments
v1: 7 pages, 3 figures, uses RevTex; v2: corrects figure placement in v1, v3: 8 pages, final published version