Inflation in realistic D-brane models
By C. Burgess, J. M. Cline, Horace Stoica, F. Quevedo. 2004
162 citations recorded by the source corpus.
We find successful models of D-brane/anti-brane inflation within a string context. We work within the GKP-LT class of type IIB string vacua for which many moduli are stabilized through fluxes, as recently modified to include `realistic' orbifold sectors containing standard-model type particles. We allow all moduli to roll when searching for inflationary solutions and find that inflation is not generic inasmuch as special choices must be made for the parameters describing the vacuum. But given these choices inflation can occur for a reasonably wide range of initial conditions for the brane and antibrane. We find that D-terms associated with the orbifold blowing-up modes play an important role in the inflationary dynamics. Since the models contain a standard-model-like sector after inflation, they open up the possibility of addressing reheating issues. We calculate predictions for the CMB temperature fluctuations and find that these can be consistent with observations, but are generically not deep within the scale-invariant regime and so can allow appreciable values for dns/dln k as well as predicting a potentially observable gravity-wave signal. It is also possible to generate some admixture of isocurvature fluctuations.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/7a179b71f3ca80f2c14e76268bb48e6060553357
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Citations in the corpus
- Large-volume flux compactifications: Moduli spectrum and D3/D7 soft supersymmetry breaking (2005, result): “In particular, recent models of inflation in the KKLT scenario either coming from brane/antibrane systems [48, 61, 62, 63, 64, 65, 66] or the racetrack inflation [67, 68], could be reconsidered in view of our results.”
- Kahler moduli inflation (2005, unknown): “ar X iv :h ep -t h/ 05 09 01 2v 2 1 5 Se p 20 05 DAM TP-2005-78 hep-th/0509012 K ahler M oduliIn ation Joseph P.Conlon 1 and Fernando Quevedo 2 DAM TP,Centre forM athem aticalSciences, W ilberforce Road,Cam bridge,CB3 0W A,UK”
- Inflation and String Theory (2014, background): “A more significant risk comes from D3-branes or anti-D3-branes in the inflationary throat, which could serve as the substrate for the Standard Model [685] or as a source of supersymmetry-breaking energy [425].”
- Racetrack Inflation (2004, methodology): “To compute observable quantities for the CMB we numerically evolve the scalar field starting close to the saddle point, and let the fields evolve according to the cosmological evolution equations for non-canonically normalized scalar fields [41, 14, 42, 43]:”