Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Warp Drive: A New Approach   Certain classes of higher dimensional models suggest that the Casimir Effect
is a candidate for the cosmological constant. In this paper we demonstrate that
a sufficiently advanced civilization could, in principal, manipulate the radius
of the extra dimension to locally adjust the value of the cosmological
constant. This adjustment could be tuned to generate an expansion/contraction
of spacetime around a spacecraft creating an exotic form of field-propulsion.
Due to the fact that spacetime expansion itself is not restricted by
relativity, a faster-than-light 'warp drive' could be created. Calculations of
the energy requirements of such a drive are performed and an 'ultimate' speed
limit, based on the Planckian limits on the size of the extra dimensions is
found.

14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga