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

@article{Czerny2014RunningSI, title={Running spectral index from large-field inflation with modulations revisited}, author={Michael Czerny and Takeshi Kobayashi and Fuminobu Takahashi}, journal={Physics Letters B}, year={2014}, volume={735}, pages={176-180} }

## 41 Citations

### Simple single field inflation models and the running of spectral index

- Physics
- 2014

The BICEP2 experiment confirms the existence of primordial gravitational wave with the tensor-to-scalar ratio r = 0 ruled out at 7σ level. The consistency of this large value of r with the Planck…

### Axion monodromy inflation with multi-natural modulations

- Physics
- 2014

We study parameter space in the axion monodromy inflation corrected by dynamically generated terms involving with the axion. The potential has the linear term with multiple sinusoidal functions,…

### Beginning of Universe through large field hybrid inflation

- Physics
- 2015

Recent detection of B-mode polarization induced from tensor perturbations by the BICEP2 experiment implies the so-called large field inflation, where an inflaton field takes super-Planckian…

### Natural inflation with and without modulations in type IIB string theory

- Physics
- 2014

A bstractWe propose a mechanism for the natural inflation with and without modulation in the framework of type IIB string theory on toroidal orientifold or orbifold. We explicitly construct the…

### Ambiguity in running spectral index with an extra light field during inflation

- Physics
- 2015

At the beginning of inflation there could be extra dynamical scalar fields that will soon disappear (become static) before the end of inflation. In the light of multi-field inflation, those extra…

### Multi-natural inflation in supergravity

- Physics
- 2014

A bstractWe show that the recently proposed multi-natural inflation can be realized within the framework of 4D $ \mathcal{N} $ = 1 supergravity. The inflaton potential mainly consists of two…

### Quartic potential inspired warm standard and tachyon scalar fields brane-world inflation

- Computer Science
- 2017

It is observed that the ranges of the results of tensor-to-scalar ratio, scalar spectral index and running of spectral favor observational data like BICEP2, WMAP9 and Planck.

### Symmetry Breaking Indication for Supergravity Inflation in Light of the Planck 2015

- Physics
- 2015

Supergravity (SUGRA) theories with exact global U(1) symmetry or shift symmetry in Kähler potential provide natural frameworks for inflation. However, quadratic inflation is disfavoured by the new…

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A bstractWe show that the recently proposed multi-natural inflation can be realized within the framework of 4D $ \mathcal{N} $ = 1 supergravity. The inflaton potential mainly consists of two…

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