Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient simulations of large scale structure in modified gravity
  cosmologies with comoving Lagrangian acceleration   We implement an adaptation of the COLA approach, a hybrid scheme that
combines Lagrangian perturbation theory with an N-body approach, to model
non-linear collapse in chameleon and symmetron modified gravity models.
Gravitational screening is modeled effectively through the attachment of a
suppression factor to the linearized Klein-Gordon equations.
  The adapted COLA approach is benchmarked, with respect to an N-body code both
for the $\Lambda$CDM scenario and for the modified gravity theories. It is
found to perform well in the estimation of the dark matter power spectra, with
consistency of 1 % to $k\sim2.5$ h/Mpc. Redshift space distortions are shown to
be effectively modeled through a Lorentzian parameterization with a velocity
dispersion fit to the data. We find that COLA performs less well in predicting
the halo mass functions, but has consistency, within $1\sigma$ uncertainties of
our simulations, in the relative changes to the mass function induced by the
modified gravity models relative to $\Lambda$CDM.
  The results demonstrate that COLA, proposed to enable accurate and efficient,
non-linear predictions for $\Lambda$CDM, can be effectively applied to a wider
set of cosmological scenarios, with intriguing properties, for which clustering
behavior needs to be understood for upcoming surveys such as LSST, DESI, Euclid
and WFIRST.

24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int