Journal
PHYSICAL REVIEW D
Volume 77, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.77.023527
Keywords
-
Funding
- STFC [ST/F002998/1, PP/E004121/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F002998/1, PP/E004121/1] Funding Source: researchfish
Ask authors/readers for more resources
We compare the infrared Dirac-Born-Infeld brane inflation model to observations using a Bayesian analysis. The current data cannot distinguish it from the Lambda CDM model but is able to give interesting constraints on various microscopic parameters including the mass of the brane moduli potential, the fundamental string scale, the charge or warp factor of throats, and the number of the mobile branes. We quantify some distinctive testable predictions with stringy signatures, such as the large non-Gaussianity, and the large, but regional, running of the spectral index. These results illustrate how we may be able to probe aspects of string theory using cosmological observations.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available