Different approaches to the second-order Klein-Gordon equation

Malik, Karim A, Seery, David and Ananda, Kishore N (2008) Different approaches to the second-order Klein-Gordon equation. Classical and Quantum Gravity, 25 (17). ISSN 02649381

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We derive the Klein-Gordon equation for a single scalar field coupled to gravity at second order in perturbation theory and leading order in slow-roll. This is done in two ways: we derive the Klein-Gordon equation first using the Einstein field equation and then directly from the action after integrating out the constraint equations. We also point out an unexpected result regarding the treatment of the field equations

Item Type: Article
Additional Information: Author list in alphabetical oder
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: David Seery
Date Deposited: 06 Feb 2012 19:22
Last Modified: 02 Apr 2012 11:30
URI: http://sro.sussex.ac.uk/id/eprint/20285
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