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Title: Frustration of resonant preheating by exotic kinetic terms

We study the effects of exotic kinetic terms on parametric resonance during the preheating epoch of the early universe. Specifically, we consider modifications to the action of ordinary matter fields motivated by generalized uncertainty principles, polymer quantization, as well as Dirac-Born-Infeld and k-essence models. To leading order in an ''exotic physics'' scale, the equations of motion derived from each of these models have the same algebraic form involving a nonlinear self-interaction in the matter sector. Neglecting spatial dependence, we show that the nonlinearity effectively shuts down the parametric resonance after a finite time period. We find numeric evidence that the frustration of parametric resonance persists to spatially inhomogenous matter in (1+1)-dimensions.
Authors:
;  [1]
  1. Department of Mathematics and Statistics, University of New Brunswick, Fredericton, NB, E3B 5A3 Canada (Canada)
Publication Date:
OSTI Identifier:
22375807
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BORN-INFELD THEORY; EQUATIONS OF MOTION; INTERACTIONS; MATTER; MODIFICATIONS; NONLINEAR PROBLEMS; QUANTIZATION; RESONANCE; SPACE DEPENDENCE; UNIVERSE