Malik, Karim A, Wands, David, Lyth, David H and Liddle, Andrew R (2001) Superhorizon perturbations and preheating. In: International Conference on Cosmology and Particle Physics (CAPP 2000), JUL 17-28, 2000., VERBIER, SWITZERLAND..

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Abstract

We discuss the evolution of linear perturbations about a Friedmann-Robertson Walker background metric, using only the local conservation of energy-momentum. We show that on sufficiently large scales the curvature perturbation on spatial hypersurfaces of uniform-density is constant when the non-adiabatic pressure perturbation is negligible. We clarify the conditions under which super-horizon curvature perturbations may vary, using preheating as an example.

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Published in: Cosmology and Particle Physics: CAPP 2000. AIP Conference Proceedings, Volume 555, pp. 289-292 (2001).
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User:	Andrew Liddle
Date Deposited:	06 Feb 2012 20:17
Last Modified:	29 Mar 2012 11:45
URI:	http://srodev.sussex.ac.uk/id/eprint/25225

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