Vertex renormalization of weak interactions in compact stars: beyond leading order

Details Vertex renormalization of weak interactions in compact stars: beyond leading order Vertex renormalization of weak interactions in compact stars: beyond leading order

2012-01-06

arxiv.org/abs/1201.1394v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

v1: 7 pages, 3 figures, uses RevTex; v2: corrects figure placement in v1

Scientific paper

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 re-summed series in the particle-hole channel. The neutrino emissivity is enhanced compared to the O(v_F^4) order up to 10% for values v_F < 0.4 characteristic to baryons in compact stars.

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