Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The light speed barrier: Bending the rules   Special relativity includes a concealed mechanism for reducing time-dilation
effects in two mutually-receding objects. Forwarding their signals via one or
more intermediate physical relay stages (a "probe chain") allows enhanced
communication and propulsion efficiency. These possibilities are masked by the
mathematical redefinitions of the special theory, which then assigns the
velocity of the signal source a correspondingly lower value by using a
velocity-addition formula. Probe chains reveal the existence of
velocity-dependent curvature within inertial systems, and suggest a mechanism
for indirect radiation from black holes that is strongly reminiscent of Hawking
radiation. The "emitter-theory" force law is mentioned as a possible basis for
a curved-space alternative to special relativity.

27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph