Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Simple Quantum Integro-Differential Solver (SQuIDS)   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.

7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con