Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonrelativistic field theoretic setting for gravitational
  self-interactions   It is shown that a recently proposed model for the gravitational interaction
in non relativistic quantum mechanics is the instantaneous action at a distance
limit of a field theoretic model containing a negative energy field. It reduces
to the Schroedinger-Newton theory in a suitable mean field approximation. While
both the exact model and its approximation lead to estimates for localization
lengths, only the former gives rise to an explicit non unitary dynamics
accounting for the emergence of the classical behavior of macroscopic bodies.

8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph