Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Non-BPS Effective Actions of String Theory   We discuss some physical prospective of the non-BPS effective actions of type
IIA and IIB superstring theories. By dealing with the complete all three and
four point functions, including a closed string Ramond-Ramond (in terms of both
its field strength and its potential), gauge (scalar) fields as well as a real
tachyon and under symmetry structures, we find various restricted world volume
and bulk Bianchi identities. The complete forms of the non-BPS scattering
amplitudes including their Chan-Paton factors are elaborated. All the
singularity structures of the non-BPS amplitudes, their all orders $\alpha'$
higher derivative corrections, their contact terms and various modified Bianchi
identities are derived. Finally we show that scattering amplitudes computed in
different super-ghost pictures are compatible when suitable Bianchi identities
are imposed on the Ramond-Ramond fields. Moreover, we argue that the higher
derivative expansion in powers of the momenta of the tachyon is universal.

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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex