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.
CITATION STYLE
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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