Return of the torsion D-branes - INSPIRE

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Return of the torsion D-branes

Ilka Brunner
(
- Rutgers U., Piscataway
)
,
Jacques Distler
(
- Santa Barbara, KITP and
- Texas U.
)
,
Rahul Mahajan
(
- Texas U.
)

Jun, 2001

34 pages

Published in:

Adv.Theor.Math.Phys. 5 (2002) 311-352

e-Print:

hep-th/0106262 [hep-th]

DOI:

10.4310/ATMP.2001.v5.n2.a4

Report number:

UTTG-09-01,
RUNHETC-2001-19,
NSF-ITP-01-66

View in:

reference search19 citations

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Abstract:

We study D-branes on Calabi-Yau manifolds, carrying charges which are torsion elements of the K-theory. Interesting physics ensues when we follow these branes into nongeometrical phases of the compactification. On the level of K-theory, we determine the monodromies of the group of charges as we circle singular loci in the closed string moduli space. Going beyond K-theory, we discuss the stability of torsion D-branes as a function of the K\"ahler moduli. When the fundamental group of the Calabi-Yau is nonabelian, we find evidence for new threshold bound states of BPS branes. In a two-parameter example, we compare our results with computations in the Gepner model. Our study of the torsion D-branes in the compactification of [FHSV] sheds light on the physics of that model. In particular, we develop a proposal for the group of allowed D-brane charges in the presence of discrete RR fluxes.

membrane model: D-brane
torsion
space: Calabi-Yau
K-theory
monodromy
bound state
Gepner model
category
moduli space: Kaehler

References(33)

Figures(0)

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Sergio Ferrara
(
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)
,
Jeffrey A. Harvey
(
- Chicago U., EFI
)
,
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(
- UC, Santa Barbara
)
,
Cumrun Vafa
(
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)

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•
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Ilka Brunner
(
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)
,
Jacques Distler
(
- Texas U.
)

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•
e-Print:
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•
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Jan de Boer
(
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)
,
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(
- Amsterdam U.
)
,
Kentaro Hori
(
- Harvard U.
)
,
Arjan Keurentjes
(
- Paris U., VI-VII
)
,
John Morgan
(
- Columbia U.
)

et al.

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(
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)
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)
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(
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)
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)

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)

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(
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)
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(
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)
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(
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)

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(
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)
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Michael R. Douglas
(
- Rutgers U., Piscataway and
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)
,
Bartomeu Fiol
(
- Rutgers U., Piscataway and
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)
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)

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