Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational Couplings on D-brane Revisited   Gravitational couplings in bulk space-time include those terms which are
fixed by scattering amplitude of strings and ambiguous terms that are coming
from the field redefinitions. These field redefinitions can be fixed in the
bulk by ghost-free condition. In this paper we have revised the effective
gravitational couplings on D-branes by including the field redefinitions. We
find the gravitational effective action up to $\alpha'^2$-order.

21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph