Enhancing the tensor-to-scalar ratio in simple inflation
By V. Mukhanov, A. Vikman. 2005
151 citations recorded by the source corpus.
We show that in theories with a nontrivial kinetic term the contribution of the gravitational waves to the cosmic microwave background (CMB) fluctuations can be substantially larger than that naively expected from simple inflationary models. This increase of the tensor-to-scalar perturbation ratio leads to a larger B mode component of the CMB polarization, thus making the prospects for future detection much more promising. The other important consequence of the model considered is a higher energy scale of inflation and hence higher reheating temperature compared to a simple inflation case.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/2c83981da4e5485f3366e44776f79a21d6c961a6
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
- Tsutomu Kobayashi
- I. Sawicki
- Lavinia Heisenberg
- A. Vikman
- O. Pujolàs
- L. Senatore
- F. Vernizzi
- P. Creminelli
In Nuclear and High Energy Physics
- Tsutomu Kobayashi
- I. Sawicki
- Lavinia Heisenberg
- A. Vikman
- O. Pujolàs
- A. Fitzpatrick
- Jared Kaplan
- E. Babichev
Citations in the corpus
- A systematic approach to generalisations of General Relativity and their cosmological implications (2018, background): “For detailed studies of the k-essence field, see [92, 91, 155, 18, 114, 156].”
- k-Essence, superluminal propagation, causality and emergent geometry (2007, background): “Thus we conclude that both the k-essence [26] and the “ superluminal” inflation with large gravity waves [27] are completely safe and legitimate on the side of causality.”
- Imperfect Dark Energy from Kinetic Gravity Braiding (2010, background): “This possibility to realise superluminal propagation of perturbations on nontrivial backgrounds can lead to interesting cosmological scenarios in the context of inflation [63] and some exotic alternatives, e.”
- The Effective Field Theory of Inflation (2007, methodology): “In the following we will concentrate on the case cs ≤ 1, see [19] for a phenomenological discussion of models with cs > 1.”