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Cooling of Neutron Stars Revisited: Application of Low Energy Theorems

A. E. L. Dieperink·E. N. E. van Dalen·A. Korchin·R. Timmermans
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Abstract

Cooling of neutrons stars proceeds mainly via neutrino emission; As an example we study the modified neutrino bremsstrahlung process $nn \to nnν\barν.$ The radiated energy is small compared to other scales in the system. Hence one can use low-energy theorems to compute the neutrino emissivity in terms of the non-radiative process, ie the on-shell $T$ matrix. We find that the use of the $T-$matrix as compared to previous estimates based upon one pion exchange leads a substantial reduction of the predicted emissivity.

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A. E. L. Dieperink, E. N. E. van Dalen, A. Korchin, R. Timmermans. 2000-12-20. Cooling of Neutron Stars Revisited: Application of Low Energy Theorems. https://doi.org/10.1142/9789812810922_0054

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