Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Engineering the Quantum Foam   In 1990 Alcubierre, within the General Relativity model for space-time,
proposed a scenario for `warp drive' faster than light travel, in which objects
would achieve such speeds by actually being stationary within a bubble of space
which itself was moving through space, the idea being that the speed of the
bubble was not itself limited by the speed of light. However that scenario
required exotic matter to stabilise the boundary of the bubble. Here that
proposal is re-examined within the context of the new modelling of space in
which space is a quantum system, viz a quantum foam, with on-going
classicalisation. This model has lead to the resolution of a number of
longstanding problems, including a dynamical explanation for the so-called
`dark matter' effect. It has also given the first evidence of quantum gravity
effects, as experimental data has shown that a new dimensionless constant
characterising the self-interaction of space is the fine structure constant.
The studies here begin the task of examining to what extent the new spatial
self-interaction dynamics can play a role in stabilising the boundary without
exotic matter, and whether the boundary stabilisation dynamics can be
engineered; this would amount to quantum gravity engineering.

27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga