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The Simple Quantum Integro-Differential Solver (SQuIDS) is a C++ code designed to solve semi-analytically the evolution of a set of density matrices and scalar functions. This is done efficiently by expressing all operators in an SU(N) basis. SQuIDS provides a base class from which users can derive new classes to include new non-trivial terms from the right hand sides of density matrix equations. The code was designed in the context of solving neutrino oscillation problems, but can be applied to any problem that involves solving the quantum evolution of a collection of particles with Hilbert space of dimension up to six (but can be easily extended to higher dimensions).
SQuIDS was published in Computer Physics Communication, where you can get an official release. SQuIDS is developed with Christopher Weaver and Jordi Salvado. Please refer to CPC 2015.06.022 (see arXiv:1412.3832).
The neutrino Simple Quantum Integro-Differential Solver (nuSQuIDS) is a C++ code based on SQuIDS that propagates an ensemble of neutrinos through a given media, e.g. Sun, Earth, Vacuum, etc; while considering, in a consistent way, the effect of neutrino oscillations, with coherent matter interactions, and non-coherent interactions. The code has been design to be accurate and flexible, while at the same time maintaining excellent performance. Furthermore, the user can easily change the neutrino oscillation parameters, propagation medium, and easily incorporate new physics.
nuSQuIDS is developed in collaboration with Christopher Weaver and Jordi Salvado.
nuSQuIDS is a neutrino flux propagation code that has been designed for performance, physics completeness, and flexibility. Nevertheless, in some contexts where neutrino oscillations can be neglected a simpler solution of the neutrino propagation equation exists. This is the case for the highest energy neutrinos observed by the IceCube neutrino observatory. The neutrino Fast Attenuation Through the Earth (nuFATE) implements this solution. It was originally develop to solve the problem of neutrino transport over cosmological distance in the presence of interactions arising from new physics (see ).
nuFATE is developed in collaboration with Aaron Vincent and Ali Kheirandish.
