Supersymmetric D‐branes on flux backgrounds

Martucci, Luca

doi:10.1002/prop.200610354

Cited by 7 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…. , 3, such that 19 17) and construct domain wall networks by wrapping D5-branes around A I and B J . Consider first the case in which we do not need a D7-brane insertion at the junction.…”

Section: Domain Wall Network On Warped Calabi-yausmentioning

confidence: 99%

“…The result is type IIB on T 6 /Z 2 with 64 O3-planes. 17 Such planes have tensions equal to minus one quarter of the D3-brane tension. The internal three-form fluxes and the number N D3 of D3-branes which extend along the noncompact R 1,3 are related by the tadpole condition…”

Section: Domain Wall Network On Warped Calabi-yausmentioning

confidence: 99%

“…The main example in which we apply our general approach is the class of type II N = 1 D-calibrated flux vacua considered in [9,12,14] (for a short review see [17]). These backgrounds preserve four-dimensional Poincaré invariance and admit supersymmetric Dbranes which are spacetime filling, domain walls or strings in the four flat dimensions, or networks of them.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

D-brane networks in flux vacua, generalized cycles and calibrations

Evslin

Martucci

2007

J. High Energy Phys.

View full text Add to dashboard Cite

We consider chains of generalized submanifolds, as defined by Gualtieri in the context of generalized complex geometry, and define a boundary operator that acts on them. This allows us to define generalized cycles and the corresponding homology theory. Gauge invariance demands that D-brane networks on flux vacua must wrap these generalized cycles, while deformations of generalized cycles inside of a certain homology class describe physical processes such as the dissolution of D-branes in higher-dimensional D-branes and MMS-like instantonic transitions. We introduce calibrations that identify the supersymmetric D-brane networks, which minimize their energy inside of the corresponding homology class of generalized cycles. Such a calibration is explicitly presented for type II N = 1 flux compactifications to four dimensions. In particular networks of walls and strings in compactifications on warped Calabi-Yau's are treated, with explicit examples on a toroidal orientifold vacuum and on the Klebanov-Strassler geometry. * jevslin@ulb.ac.be

show abstract

“…. , 3, such that 19 17) and construct domain wall networks by wrapping D5-branes around A I and B J . Consider first the case in which we do not need a D7-brane insertion at the junction.…”

Section: Domain Wall Network On Warped Calabi-yausmentioning

confidence: 99%

Section: Domain Wall Network On Warped Calabi-yausmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

D-brane networks in flux vacua, generalized cycles and calibrations

Evslin

Martucci

2007

J. High Energy Phys.

View full text Add to dashboard Cite

show abstract

“…We now discuss the superpotential. Starting from the F-theory perspective the aim is to recover the well-known brane superpotential for a D7-brane in Type IIB theory [61,109,112] 13) in addition to the standard Type IIB bulk superpotential. Here, Γ 5 is the five-chain swept out by a pair of D7-branes as they are pulled off the O7-plane.…”

Section: Superpotential From F-theory and Type Iib Perspectivementioning

confidence: 99%

D7‐brane moduli space in axion monodromy and fluxbrane inflation

Arends

Hebecker

Heimpel

et al. 2014

Fortschritte der Physik

View full text Add to dashboard Cite

Abstract:We analyze the quantum-corrected moduli space of D7-brane position moduli with special emphasis on inflationary model building. D7-brane deformation moduli are key players in two recently proposed inflationary scenarios: The first, D7-brane chaotic inflation, is a variant of axion monodromy inflation which allows for an effective 4d supergravity description. The second, fluxbrane inflation, is a stringy version of D-term hybrid inflation. Both proposals rely on the fact that D7-brane coordinates enjoy a shift-symmetric Kähler potential at large complex structure of the Calabi-Yau threefold, making them naturally lighter than other fields. This shift symmetry is inherited from the mirror-dual Type IIA Wilson line on a D6-brane at large volume. The inflaton mass can be provided by a tree-level term in the flux superpotential. It induces a monodromy and, if tuned to a sufficiently small value, can give rise to a large-field model of inflation. Alternatively, by a sensible flux choice one can completely avoid a tree-level mass term, in which case the inflaton potential is induced via loop corrections. The positive vacuum energy can then be provided by a D-term, leading to a small-field model of hybrid natural inflation. In the present paper, we continue to develop a detailed understanding of the D7-brane moduli space focusing among others on shift-symmetry-preserving flux choices, flux-induced superpotential in Type IIB/F-theory language, and loop corrections. While the inflationary applications represent our main physics motivation, we expect that some of our findings will be useful for other phenomenological issues involving 7-branes in Type IIB/F-theory constructions.

show abstract

“…While, for most cases, we indicate ways in which these mass terms can be absent or suppressed, we stress that large parts of the subject are still work in progress and will be discussed more thoroughly in a further publication [21]. The most direct way in which the D7-brane modulus ζ can enter the F -term potential is through a direct appearance in the tree-level superpotential [48,[84][85][86][87][88] W brane = C 5 Ω ∧F.…”

Section: Flat Directions For the Inflatonmentioning

confidence: 99%

Fluxbranes: moduli stabilisation and inflation

Hebecker

Kraus

Küntzler

et al. 2013

J. High Energ. Phys.

View full text Add to dashboard Cite

Fluxbrane inflation is a stringy version of D-term inflation in which two fluxed D7-branes move towards each other until their (relative) gauge flux annihilates. Compared to brane-antibrane inflation, the leading-order inflationary potential of this scenario is much flatter. In the present paper we first discuss a new explicit moduli stabilisation procedure combining the F -and D-term scalar potentials: It is based on fluxed D7-branes in a geometry with three large four-cycles of hierarchically different volumes. Subsequently, we combine this moduli stabilisation with the fluxbrane inflation idea, demonstrating in particular that CMB data (including cosmic string constraints) can be explained within our setup of hierarchical large volume CY compactifications. We also indicate how the η-problem is expected to re-emerge through higher-order corrections and how it might be overcome by further refinements of our model. Finally, we explain why recently raised concerns about constant FI terms do not affect the consistent, string-derived variant of D-term inflation discussed in this paper.

show abstract

Supersymmetric D‐branes on flux backgrounds

Cited by 7 publications

References 18 publications

D-brane networks in flux vacua, generalized cycles and calibrations

D-brane networks in flux vacua, generalized cycles and calibrations

D7‐brane moduli space in axion monodromy and fluxbrane inflation

Fluxbranes: moduli stabilisation and inflation

Contact Info

Product

Resources

About