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arXiv · 1201.1394

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

Armen Sedrakian
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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.

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Armen Sedrakian. 2012-01-06. Vertex renormalization of weak interactions in compact stars: beyond leading order. https://doi.org/10.1103/physrevc.86.025803

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