Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Weak equivalence principle in noncommutative phase space and the
  parameters of noncommutativity   The weak equivalence principle is studied in a space with noncommutativity of
coordinates and noncommutativity of momenta. We find conditions on the
parameters of noncommutativity which give the possibility to recover the
equivalence principle in noncommutative phase space. It is also shown that in
the case when these conditions are satisfied the motion of the center-of-mass
of a composite system in noncommutative phase space and the relative motion are
independent, the kinetic energy of composite system has additivity property and
is independent on the systems composition. So, we propose conditions on the
parameters of noncommutativity which give the possibility to solve the list of
problems in noncommutative phase space.

23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th