# BICEP/Keck and cosmological attractors

@article{Kallosh2021BICEPKeckAC, title={BICEP/Keck and cosmological attractors}, author={Renata Kallosh and Andrei Linde}, journal={Journal of Cosmology and Astroparticle Physics}, year={2021}, volume={2021} }

We discuss implications of the latest BICEP/Keck data release for inflationary models, with special emphasis on the cosmological attractors which can describe all presently available inflation-related observational data. These models are compatible with any value of the tensor to scalar ratio r, all the way down to r = 0. Some of the string theory motivated models of this class predict 10-3 ≤ r ≤ 10-2. The upper part of this range can be explored by the ongoing BICEP/Keck observations.

## One Citation

Very Hairy Inflation

- Physics
- 2021

We revisit the rollercoaster cosmology based on multiple stages of monodromy inflation. Working within the framework of effective flux monodromy field theory, we include the full range of strong…

## References

SHOWING 1-10 OF 51 REFERENCES

Planck 2018 and brane inflation revisited

- PhysicsJournal of High Energy Physics
- 2019

A bstractWe revisit phenomenological as well as string-theoretical aspects of D-brane inflation cosmological models. Phenomenologically these models stand out on par with α-attractors, as models with…

Cosmological Attractors and Asymptotic Freedom of the Inflaton Field

- Physics
- 2016

We show that the inflaton coupling to all other fields is exponentially suppressed during inflation in the cosmological $\alpha$-attractor models. In the context of supergravity, this feature is a…

Universal attractor for inflation at strong coupling.

- Physics, MedicinePhysical review letters
- 2014

A novel nonminimal coupling between gravity and the inflaton sector is introduced and for large values of this coupling all models asymptote to a universal attractor, located in the "sweet spot" of parameter values that are preferred by Planck's recent results.

Maximal supersymmetry and B-mode targets

- Physics
- 2017

A bstractExtending the work of Ferrara and one of the authors [1], we present dynamical cosmological models of α-attractors with plateau potentials for 3α = 1, 2, 3, 4, 5, 6, 7. These models are…

The Unity of Cosmological Attractors

- Physics
- 2014

Recently, several broad classes of inflationary models have been discovered whose cosmological predictions are stable with respect to significant modifications of the inflaton potential. Some classes…

Squeezing down the Theory Space for Cosmic Inflation

- Physics
- 2021

R emarkably, the large-scale Universe can be adequately described by a model involving only a handful of parameters. This lambda cold dark matter (LCDM) model postulates that the expansion of the…

Natural inflation with pseudo Nambu-Goldstone bosons.

- Physics, MedicinePhysical review letters
- 1990

We show that a pseudo-Nambu-Goldstone boson, with a potential of the form V(d) = A’[1 f cos(+/f)], can naturally give rise to an epoch of infiation in the early universe. Successful inflation can be…

Planck2018 results

- Astronomy & Astrophysics
- 2020

We report on the implications for cosmic inflation of the 2018 release of thePlanckcosmic microwave background (CMB) anisotropy measurements. The results are fully consistent with those reported…

On hilltop and brane inflation after Planck

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2019

Hilltop inflation models are often described by potentials V = V0 (1−n/mn+... ). The omitted terms indicated by ellipsis do not affect inflation for m 1, but the most popular models with n = 2 and 4…