Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topics on the geometry of D-brane charges and Ramond-Ramond fields -
  Part II: Low-degree RR fields   We discuss the geometry of the Ramond-Ramond fields of low degree via the
language of abelian p-gerbes, working in type II superstring theory with
vanishing H-flux. A Dp-brane is a source for the Ramond-Ramond field strength
G_(p+2), which can be thought of as the curvature of a connection on a p-gerbe
with U(1)-band. The highest degree forms of the connection are the local
Ramond-Ramond potentials C_(p+1). This picture is clear for p >= 0, a 0-gerbe
being a line bundle. Actually, one can encounter also lower degree
Ramond-Ramond field strengths: G_1 in IIB superstring theory, and G_0 in IIA
superstring theory. Although the geometrical nature of these objects is simple
in itself, it is interesting to explicitly clarify the analogy with the
geometry of the higher degree fields and potentials, introducing the notions of
(-1)-gerbes with connection and (-2)-gerbes. We define these gerbes and we show
that they are better described by a variant of ordinary Cech cohomology.

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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th