# Searching for Inflation in Simple String Theory Models: An Astrophysical Perspective

@article{Hertzberg2007SearchingFI, title={Searching for Inflation in Simple String Theory Models: An Astrophysical Perspective}, author={Mark P. Hertzberg and Max Tegmark and Shamit Kachru and Jessie Shelton and Onur Ozcan}, journal={Physical Review D}, year={2007}, volume={76}, pages={103521} }

Attempts to connect string theory with astrophysical observation are hampered by a jargon bar- rier, where an intimidating profusion of orientifolds, Kahler potentials, etc. dissuades cosmologists from attempting to work out the astrophysical observables of specific string theory solutions from the recent literature. We attempt to help bridge this gap by giving a pedagogical exposition with detailed examples, aimed at astrophysicists and high energy theorists alike, of how to compute…

## 42 Citations

Inflationary cosmology and fundamental physics

- Physics
- 2010

This thesis is a collection of several papers at the
interface between cosmology, particle physics, and field theory. In
the first half, we examine topics that are directly related to
inflation:…

Constraining fundamental physics with cosmology

- Physics
- 2009

It is shown in three examples that future cosmological data may allow us to constrain fundamental physics in interesting ways. The first example illustrates that correlations in the polarization of…

Searching for slow-roll moduli inflation in massive type IIA supergravity with metric fluxes

- Physics
- 2009

We derive several no-go theorems in the context of massive type IIA string theory compactified to four dimensions in a way that, in the absence of fluxes, preserves $\mathcal{N}=1$ supersymmetry. Our…

Axion inflation in type II string theory

- Physics
- 2008

Inflationary models driven by a large number of axion fields are discussed in the context of type IIB compactifications with N = 1 supersymmetry. The inflatons arise as the scalar modes of the R-R…

Exploring Spiral Inflation in String Theory

- Physics
- 2013

We investigate the possibility that spiral inflation can be realized using the near-conifold flux potentials for the complex structure moduli in type IIB string theory compactified on a Calabi-Yau…

Inflationary Constraints on Type IIA String Theory

- Physics
- 2007

We prove that inflation is forbidden in the most well understood class of semi-realistic type IIA string compactifications: Calabi-Yau compactifications with only standard NS-NS 3-form flux, R-R…

Monodromy in the CMB: Gravity Waves and String Inflation

- Physics
- 2008

We present a simple mechanism for obtaining large-field inflation, and hence a gravitational wave signature, from string theory compactified on twisted tori. For nil manifolds, we obtain a leading…

Observable predictions of generalised inflationary scenarios

- Physics
- 2013

Inflation is an early period of accelerated cosmic expansion, thought to be sourced by high energy physics. A key task today is to use the influx of increasingly precise observational data to…

Can Compactifications Solve the Cosmological Constant Problem

- Physics
- 2015

Recently, there have been claims in the literature that the cosmological constant problem can be dynamically solved by specific compactifications of gravity from higher-dimensional toy models. These…

On Slow-roll Moduli Inflation with Metric Fluxes in Massive IIA Supergravity

- Physics
- 2008

We derive several no-go theorems in the context of massive type IIA string theory compactified to four dimensions in a way that, in the absence of fluxes, preserves N = 1 supersymmetry. Our…

## References

SHOWING 1-10 OF 83 REFERENCES

Using cosmology to constrain the topology of hidden dimensions

- Physics
- 2006

A four-dimensional universe, arising from a flux compactification of Type IIB string theory, contains scalar fields with a potential determined by topological and geometric parameters of the internal…

Brane inflation: String theory viewed from the cosmos

- Physics
- 2006

Brane inflation is a specific realization of the inflationary universe scenario in the early universe within the brane world framework in string theory. The naturalness and robustness of this…

Modular cosmology.

- Physics, MedicinePhysical review. D, Particles and fields
- 1995

It is shown that string theory has two generic types of domain walls which could be the seeds for inflation, and it is argued that modular physics provides a very robust model of inflation.

Brane-antibrane inflation in orbifold and orientifold models

- Physics
- 2002

We analyse the cosmological implications of brane-antibrane systems in string-theoretic orbifold and orientifold models. In a class of realistic models, consistency conditions require branes and…

Towards inflation in string theory

- Physics
- 2003

We investigate the embedding of brane inflation into stable compactifications of string theory. At first sight a warped compactification geometry seems to produce a naturally flat inflaton potential,…

Comparing brane inflation to WMAP

- Physics
- 2007

We compare the simplest realistic brane inflationary model to recent cosmological data, including Wilkinson Microwave Anisotropy Probe (WMAP) three-year cosmic microwave background (CMB) results,…

Moduli Stabilisation and Applications in IIB String Theory

- Physics
- 2006

String compactifications represent the most promising approach towards unifying general relativity with particle physics. However, naive compactifications give rise to massless particles (moduli)…

Brane Inflation

- Physics
- 1998

We present a novel inflationary scenario in theories with low scale (TeV) quantum gravity, in which the standard model particles are localized on the branes whereas gravity propagates in the bulk of…

Chasing brane inflation in string theory

- Physics
- 2008

We investigate the embedding of brane–antibrane inflation into a concrete type IIB string theory compactification with all moduli fixed. Specifically, we are considering a D3-brane, whose position…

False vacuum inflation with Einstein gravity.

- Physics, MedicinePhysical review. D, Particles and fields
- 1994

Investigation of chaotic inflation models with two scalar fields, such that one field (the inflaton) rolls while the other is trapped in a false vacuum state, finds that false vacuum inflation occurs with the inflaton field far below the Planck scale, making it easier to implement in the context of supergravity than standard chaotic inflation.