Symmetries in neutrino-electron scattering

Details Symmetries in neutrino-electron scattering Symmetries in neutrino-electron scattering

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...433..247c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 433, no. 1, p. 247-249

Statistics

Computation

8

Distribution Functions, Electron Scattering, Electrons, Elementary Particle Interactions, Kernel Functions, Neutrinos, Scattering Functions, Thermodynamic Equilibrium, Algorithms, Eddington Approximation, Momentum Transfer

Scientific paper

The symmetries of the neutrino-electron scattering kernel are exposed. The kernel must explicitly conserve particle number at each vertex and vanish in local thermodynamic equilibrium. I show that the latter requirement must be met by the combination of detailed balance between in and out beams and a symmetry property of the kernel that until now has gone unnoticed. Exploitation of this extra symmetry approximately doubles the computational efficiency of the algorithm.

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