D-Branes On The Conifold And N = 1 Gauge/Gravity Dualities

Herzog, Christopher P.; Klebanov, Igor R.; Ouyang, Peter

doi:10.1007/978-94-010-0211-0_5

Cited by 79 publications

(155 citation statements)

References 69 publications

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“…The resulting warped deformed conifold background is given in [14,25]. Ifr UV is the maximum radial coordinate where the throat is glued into a compact manifold, then for ε 2/3 ≪r ≪r UV the background is well-approximated by the warped conifold [15] …”

Section: The Compactificationmentioning

confidence: 99%

“…The approximation (2.5) is not accurate enough to determine the warp factor at the bottom of the throat; its value is [14,25] h…”

Section: The Compactificationmentioning

confidence: 99%

“…It is possible to arrange for the magnitude of scalar perturbations on CMB scales to be small, 25) by adjusting the overall scale of inflation.…”

Section: Phenomenological Model: Cubic Inflationmentioning

confidence: 99%

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Towards an explicit model of D-brane inflation

Baumann

Dymarsky

Klebanov

et al. 2008

J. Cosmol. Astropart. Phys.

242

521

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We present a detailed analysis of an explicit model of warped D-brane inflation, incorporating the effects of moduli stabilization. We consider the potential for D3-brane motion in a warped conifold background that includes fluxes and holomorphically-embedded D7-branes involved in moduli stabilization. Although the D7-branes significantly modify the inflaton potential, they do not correct the quadratic term in the potential, and hence do not cause a uniform change in the slow-roll parameter η. Nevertheless, we present a simple example based on the Kuperstein embedding of D7-branes, z 1 = constant, in which the potential can be fine-tuned to be sufficiently flat for inflation. To derive this result, it is essential to incorporate the fact that the compactification volume changes slightly as the D3-brane moves. We stress that the compactification geometry dictates certain relationships among the parameters in the inflaton Lagrangian, and these microscopic constraints impose severe restrictions on the space of possible models. We note that the shape of the final inflaton potential differs from projections given in earlier studies: in configurations where inflation occurs, it does so near an inflection point. Finally, we comment on the difficulty of making precise cosmological predictions in this scenario. This is the companion paper to [1].

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Section: The Compactificationmentioning

confidence: 99%

“…The approximation (2.5) is not accurate enough to determine the warp factor at the bottom of the throat; its value is [14,25] h…”

Section: The Compactificationmentioning

confidence: 99%

See 1 more Smart Citation

Towards an explicit model of D-brane inflation

Baumann

Dymarsky

Klebanov

et al. 2008

J. Cosmol. Astropart. Phys.

242

521

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show abstract

“…Using tildes to indicate quantities are given in the S-dual geometry, the form of the metric at the tip of the SDKS throat is [39]:…”

Section: Unwinding In the S-dual Of Klebanov-strasslermentioning

confidence: 99%

Towards an explicit model of large field inflation

Dorronsoro¹,

Schillo²

2018

J. High Energ. Phys.

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Abstract:The unwinding inflation mechanism is studied in a type IIB flux compactification where all moduli are stabilized using flux, non-perturbative effects, and the leading α corrections of the large volume scenario. We consider the backreaction on the geometry due to the presence of anti-D3 branes as well as the backreaction of inflation on the Kähler moduli, and compute the resulting corrections to the slow-roll potential. By taking large flux numbers, we are able to find inflationary epochs where backreaction effects are under control, the inflaton traverses a super-Planckian field range, and the resulting amplitude of scalar perturbations is consistent with observation.

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“…The corresponding Calabi-Yau cone is called the conifold. Much of the work on gauge-string dualities originating from D-branes on the conifold is reviewed in the 2001 Les Houches lectures [82]. Here we will emphasize the progress that has taken place since then, in particular on issues related to breaking of the U (1) baryon number symmetry.…”

Section: Warped Conifold and Its Resolutionmentioning

confidence: 99%