## 32 Citations

### Probing the weak gravity conjecture in the cosmic microwave background

- PhysicsPhysical Review D
- 2020

The weak gravity conjecture imposes severe constraints on natural inflation. A trans-Planckian axion decay constant can be realized only if the potential exhibits an additional (subdominant)…

### Relaxion dark matter

- PhysicsPhysical Review D
- 2019

We highlight a new connection between the Standard Model hierarchy problem and the dark matter sector. The key piece is the relaxion field, which besides scanning the Higgs mass and setting the…

### Nonlinear perturbations from the coupling of the inflaton to a non-Abelian gauge field, with a focus on Chromo-Natural Inflation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2018

Several models of inflation employing a triplet of SU(2) vectors with spatially orthogonal vacuum expectation values (VEVs) have been recently proposed. One (tensor) combination t of the vector modes…

### Subleading effects and the field range in axion inflation

- Physics
- 2016

An attractive candidate for the inflaton is an axion slowly rolling down a flat potential protected by a perturbative shift symmetry. Realisations of this idea within large field, natural and…

### Aligned natural inflation in the Large Volume Scenario

- PhysicsJournal of High Energy Physics
- 2021

Abstract
We embed natural inflation in an explict string theory model and derive observables in cosmology. We achieve this by compactifying the type IIB string on a Calabi-Yau orientifold,…

### Nonlinear perturbations from axion-gauge fields dynamics during inflation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

We study a variant of the Chromo-Natural Inflation (CNI) mechanism in which the inflaton interacts only gravitationally with the CNI fields. Integrating out all the non-dynamical scalar fields of the…

### Inflation from periodic extra dimensions

- Physics
- 2016

We discuss a realization of a small field inflation based on string inspired supergravities. In theories accompanying extra dimensions, compactification of them with small radii is required for…

### Primordial black holes as dark matter and gravitational waves from bumpy axion inflation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

We consider a mechanism for producing a significant population of primordial black holes (PBHs) and an observable stochastic gravitational wave background (SGWB) within string theory inspired models…

### Primordial black holes and associated gravitational waves in axion monodromy inflation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2018

In the axion monodromy inflation, the inflation is driven by the axion with super-Planckian field values in a monomial potential with superimposed sinusoidal modulations. The coupling of the axion to…

## References

SHOWING 1-10 OF 31 REFERENCES

### Hierarchical axion inflation.

- PhysicsPhysical review letters
- 2014

We propose a new field theory mechanism for generating an effective trans-Planckian decay constant from sub-Planckian ones. Using the minimal two axions and a hierarchy between two axion decay…

### Aligned Natural Inflation in String Theory

- Physics
- 2014

The authors discuss type IIB string theory realizations of Kim-Nilles-Peloso (KNP) multiple axion inflation, which provides a super-Planckian effective axion decay constant, necessary for UV stable…

### Running spectral index from large-field inflation with modulations revisited

- Physics, Economics
- 2014

### Natural inflation and quantum gravity.

- PhysicsPhysical review letters
- 2015

It is shown that higher-dimensional gauge and gravitational dynamics can elegantly satisfy constraints and lead to a viable, theoretically controlled and predictive class of natural inflation models.

### A natural framework for chaotic inflation.

- PhysicsPhysical review letters
- 2009

It is shown that inflation with a quadratic potential occurs naturally in theories where an axionlike field mixes with a 4-form, and the axion can roll slowly towards its minimum, as in the simplest version of chaotic inflation.

### Naturalness and the weak gravity conjecture.

- GeologyPhysical review letters
- 2014

The weak gravity conjecture is generalized to product gauge groups and its tension with the naturalness principle for a charged scalar coupled to gravity is studied.