Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effective action of D-branes in Calabi-Yau orientifold
  compactifications   In this review article we study type IIB superstring compactifications in the
presence of space-time filling D-branes while preserving N=1 supersymmetry in
the effective four-dimensional theory. This amount of unbroken supersymmetry
and the requirement to fulfill the consistency conditions imposed by the
space-time filling D-branes lead to Calabi-Yau orientifold compactifications.
For a generic Calabi-Yau orientifold theory with space-time filling D3- or
D7-branes we derive the low-energy spectrum. In a second step we compute the
effective N=1 supergravity action which describes in the low-energy regime the
massless open and closed string modes of the underlying type IIB Calabi-Yau
orientifold string theory. These N=1 supergravity theories are analyzed and in
particular spontaneous supersymmetry breaking induced by non-trivial background
fluxes is studied. For D3-brane scenarios we compute soft-supersymmetry
breaking terms resulting from bulk background fluxes whereas for D7-brane
systems we investigate the structure of D- and F-terms originating from
worldvolume D7-brane background fluxes. Finally we relate the geometric
structure of D7-brane Calabi-Yau orientifold compactifications to N=1 special
geometry.

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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin