Short distance physics of the inflationary de Sitter universe

Journal Article · Tue Sep 01 00:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/09/025· OSTI ID:22525375

Ali, Ahmed Farag ^[1]; Faizal, Mir ^[2]

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1. Department of Physics, Florida State University, Tallahassee, FL 32306 (United States)
2. Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, N2L 3G1 (Canada)

In this work, we investigate inflationary cosmology using scalar field theory deformed by the generalized uncertainty principle (GUP) containing a linear momentum term. Apart from being consistent with the existence of a minimum measurable length scale, this GUP is also consistent with doubly special relativity and hence with the existence of maximum measurable momentum. We use this deformed scalar field theory to analyze the tensor and scalar mode equations in a de Sitter background, and to calculate modifications to the tensor-to-scalar ratio. Finally, we compare our results for the tensor-to-scalar ratio with the Planck data to constrain the minimum length parameter in the GUP.

• OSTI ID: 22525375
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COMPARATIVE EVALUATIONS
COSMOLOGICAL INFLATION
COSMOLOGY
DE SITTER GROUP
DE SITTER SPACE
DISTANCE
INFLATIONARY UNIVERSE
LINEAR MOMENTUM
RELATIVITY THEORY
SCALAR FIELDS
SCALARS
TENSORS
UNCERTAINTY PRINCIPLE
UNIVERSE