# Power spectrum for inflation models with quantum and thermal noises

@article{Ramos2013PowerSF, title={Power spectrum for inflation models with quantum and thermal noises}, author={Rudnei O. Ramos and L. A. da Silva}, journal={arXiv: Cosmology and Nongalactic Astrophysics}, year={2013} }

We determine the power spectrum for inflation models covering all regimes from cold (isentropic) to warm (nonisentropic) inflation. We work in the context of the stochastic inflation approach, which can nicely describe both types of inflationary regimes concomitantly. A throughout analysis is carried out to determine the allowed parameter space for simple single field polynomial chaotic inflation models that is consistent with the most recent cosmological data from the nine-year Wilkinson…

## 78 Citations

Constraining Warm Inflation with CMB data

- Physics
- 2017

We confront the warm inflation observational predictions directly with the latest CMB data. We focus on a linear temperature (T) dissipative coefficient combined with the simplest model of inflation,…

Dynamical and observational constraints on the warm little inflaton scenario

- PhysicsPhysical Review D
- 2018

We explore the dynamics and observational predictions of the Warm Little Inflaton scenario, presently the simplest realization of warm inflation within a concrete quantum field theory construction.…

The importance of being warm (during inflation)

- Physics
- 2014

Article history: The amplitude of primordial curvature perturbations is enhanced when a radiation bath at a temperature T > H is sustained during inflation by dissipative particle production, which…

Towards a reliable effective field theory of inflation

- Physics
- 2019

We present the first renormalizable quantum field theory model for inflation with a super-Hubble inflaton mass and sub-Planckian field excursions, which is thus technically natural and consistent…

Trans-Planckian effects in warm inflation

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

We study the effect of a non-trivial vacuum prescription on warm inflation observables, namely the power spectrum of the comoving curvature perturbation. Non-trivial choice of vacuum, can provide…

Warm inflation dissipative effects: Predictions and constraints from the Planck data

- Physics
- 2017

We explore the warm inflation scenario theoretical predictions looking at two different dissipative regimes for several representative primordial potentials. As it is well known, the warm inflation…

Observational constraints on warm inflation in loop quantum cosmology

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

By incorporating quantum aspects of gravity, Loop Quantum Cosmology (LQC) provides a self-consistent extension of the inflationary scenario, allowing for modifications in the primordial inflationary…

Probability of warm inflation in loop quantum cosmology

- PhysicsPhysical Review D
- 2018

Warm inflation is analyzed in the context of Loop Quantum Cosmology (LQC). The bounce in LQC provides a mean through which a Liouville measure can be defined, which has been used previously to…

Dynamics of warm power-law plateau inflation with a generalized inflaton decay rate: predictions and constraints after Planck 2015

- Physics
- 2017

In the present work, we study the consequences of considering a new family of single-field inflation models, called power-law plateau inflation, in the warm inflation framework. We consider the…

Warm inflation within a supersymmetric distributed mass model

- PhysicsPhysical Review D
- 2019

We study the dynamics and observational predictions of warm inflation within a supersymmetric distributed mass model. This dissipative mechanism is well described by the interactions between the…

## References

SHOWING 1-10 OF 81 REFERENCES

Perturbation spectra in the warm inflationary scenario

- Physics
- 2000

We investigate the phenomenology of warm inflation and present generic results about the evolution of the inflaton and radiation fields. The general conditions required for warm inflation to take…

General dissipation coefficient in low-temperature warm inflation

- Physics
- 2013

In generic particle physics models, the inflaton field is coupled to other bosonic and fermionic fields that acquire large masses during inflation and may decay into light degrees of freedom. This…

Warm inflation model building

- Physics
- 2009

We review the main aspects of the warm inflation scenario, focusing on the inflationary dynamics and the predictions related to the primordial spectrum of perturbations, to be compared with the…

Stochastic inflation and the lower multipoles in the cosmic microwave background anisotropies

- Physics
- 2004

We generalize the treatment of inflationary perturbations to deal with the non-Markovian coloured noise emerging from any realistic approach to stochastic inflation. We provide a calculation of the…

On perturbations in warm inflation

- Physics
- 2001

Warm inflation is an interesting possibility of describing the early universe, whose basic feature is the absence, at least in principle, of a preheating or reheating phase. Here we analyze the…

The influence of super-horizon scales on cosmological observables generated during inflation

- Physics
- 2003

Using the techniques of out-of-equilibrium field theory, we study the influence on properties of cosmological perturbations generated during inflation on observable scales coming from fluctuations…

Warm inflection

- Physics
- 2012

A bstractWhile ubiquitous in supersymmetric and string theory models, inflationary scenarios near an inflection point in the scalar potential generically require a severe fine-tuning of a priori…

Scalar perturbation spectra from warm inflation

- Physics
- 2004

We present a numerical integration of the cosmological scalar perturbation equations in warm inflation. The initial conditions are provided by a discussion of the thermal fluctuations of an inflaton…

Warm Dirac-Born-Infeld inflation

- Physics
- 2011

We propose a warm inflationary model in the context of relativistic D-brane inflation in a warped throat, which has Dirac-Born-Infeld (DBI) kinetic term and is coupled to radiation through a…

Mass density perturbations from inflation with thermal dissipation

- Physics
- 1999

We study the power spectrum of the mass density perturbations in an inflation scenario that includes thermal dissipation. We show that the condition on which the thermal fluctuations dominate the…