General relativistic neutrino transport with spectral methods

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Abstract

Supernovae numerical simulations are highly demanding in computational power, yet they are also rapidly increasing in complexity. There is now a very high demand in new methods for neutrino treatment, due to the fact that neutrino is at the same time a crucial ingredient and the most expensive one in computational resources. A possibility to explore is the treatment by spectral methods, because they are known to require less resources. It is the purpose of a new code, named Lorene's Ghost (for Lorene's gravitational handling of spectral transport), developed to treat the problem of neutrino transport in supernovae. The code can handle full phase-space dependent problems (6D + time), retains the full energy dependence of the neutrinos, and can also handle general relativity in the conformally flat approximation. Several points of the formalism needed to obtain a formulation of the general relativistic Boltzmann equation adapted to our case are discussed, as well as some technical aspects of spectral methods.

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APA

Peres, B. (2015). General relativistic neutrino transport with spectral methods. In Journal of Physics: Conference Series (Vol. 600). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/600/1/012010

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