Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on Tachyon dynamics   A suitable splitting of tachyon field equation is able to disclose non
trivial properties of Born-Infeld (some known, some unexpected) and Polyakov
actions; the tachyon equation also can be analyzed in some detail. The analysis
displays an intriguing connection between sine-Gordon theory and some crucial
issues such as the emergence of perturbative string states when a D-Brane and
an anti-D-Brane annihilate and the confinement of charged D-Branes.

18
The categories of this paper are: econ
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat