Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Economics of Interstellar Flight   Large scale directed energy offers the possibility of radical transformation
in a variety of areas, including the ability to achieve relativistic flight
that will enable the first interstellar missions, as well as rapid
interplanetary transit. In addition, the same technology will allow for
long-range beamed power for ion, ablation, and thermal engines, as well as
long-range recharging of distant spacecraft, long-range and ultra high
bandwidth laser communications, and many additional applications that include
remote composition analysis, manipulation of asteroids, and full planetary
defense. Directed energy relies on photonics which, like electronics, is an
exponentially expanding growth area driven by diverse economic interests that
allows transformational advances in space exploration and capability. We have
made enormous technological progress in the last few years to enable this
long-term vision. In addition to the technological challenges, we must face the
economic challenges to bring the vision to reality. The path ahead requires a
fundamental change in the system designs to allow for the radical cost
reductions required. To afford the full-scale realization of this vision we
will need to bring to fore integrated photonics and mass production as a path
forward. Fortunately, integrated photonics is a technology driven by vast
consumer need for high speed data delivery. We outline the fundamental physics
that drive the economics and derive an analytic cost model that allows us to
logically plan the path ahead.

16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th