Racetrack Inflation
By Jose J. Blanco-Pillado, C. Burgess, J. Cline, C. Escoda, M. Gómez-Reino, R. Kallosh, Andrei Linde, F. Quevedo. Journal of High Energy Physics, 2004
260 citations recorded by the source corpus.
: We develop a model of eternal topological inflation using a racetrack potential within the context of type IIB string theory with KKLT volume stabilization. The inflaton field is the imaginary part of the K¨ahler structure modulus, which is an axion-like field in the 4D effective field theory. This model does not require moving branes, and in this sense it is simpler than other models of string theory inflation. Contrary to single-exponential models, the structure of the potential in this example allows for the existence of saddle points between two degenerate local minima for which the slow-roll conditions can be satisfied in a particular range of parameter space. We conjecture that this type of inflation should be present in more general realizations of the modular landscape. We also consider ‘irrational’ models having a dense set of minima, and discuss their possible relevance for the cosmological constant problem.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/2c1447ef02762c02eba76166b83f2ea6be4aeee0
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Citations in the corpus
- Inflating in a Better Racetrack (2006, methodology): “[6, 12] the scaling properties of the low-energy action were exploited in finding values of the parameters which satisfied all of these criteria.”
- Towards inflation in string theory (2003, background): “At present, there is only one model of the modular inflation, which was called racetrack inflation [57].”
- Inflation and string cosmology (2001, background): “Note, however, that eternal inflation, which naturally occurs in the simplest versions of chaotic inflation, in new inflation, and in the racetrack scenario [83], may not exist in many versions of string theory inflation of the hybrid type, such as the models of [86, 88, 97].”
- Monodromy in the CMB: Gravity Waves and String Inflation (2008, background): “Given that, the (fractional) power law potential yields predictions for the tilt ns − 1 of the spectrum of density perturbations, and (3)Axions can play an important role in small-field string theoretic inflation as well; see [13] for an interesting recent example based partly on [14].”
- Creation of a compact topologically nontrivial inflationary universe (2004, background): “It is quite interesting therefore that the very idea of compactification, being applied to our universe, may help us to resolve the problem of initial conditions for inflation in string theory [29], including the so-called overshooting problem [30, 31, 32, 33].”
- Landscape, the scale of SUSY breaking, and inflation (2004, methodology): “The exponential terms arise either from Euclidean D3 branes of from gaugino condensation on D7 branes, as explained in [5, 17].”
- Inflation and String Theory (2014, methodology): “69 The example given in [618] has N = 90 and M = 100, as well as fine-tuned values for W0,A,B, %.”
- Building MSSM flux vacua (2004, background): “In addition, flux compactifications have also shown to play a crucial role in the constructions of metastable de Sitter vacua [12] and inflationary models [13,14] from string theory.”
- Hilltop inflation (2005, methodology): “Consider first the model of [25], inspired by KKLT stabilization [26].”
- Phenomenology of a pseudo-scalar inflaton: naturally large nongaussianity (2011, background): “There are a variety of interesting multi-field models involving axions, for example racetrack inflation [63, 64] and the axionic D3/D7 model [65].”
- 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.”