Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conservative discretization of the Einstein-Dirac equations in
  spherically symmetric spacetime   In computational relativity, critical behaviour near the black hole threshold
has been studied numerically for several models in the last decade. In this
paper we present a spatial Galerkin method, suitable for finding numerical
solutions of the Einstein-Dirac equations in spherically symmetric spacetime
(in polar/areal coordinates). The method features exact conservation of the
total electric charge and allows for a spatial mesh adaption based on physical
arclength. Numerical experiments confirm excellent robustness and convergence
properties of our approach. Hence, this new algorithm is well suited for
studying critical behaviour.

30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an