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Author Kaloper, Nemanja ♦ Kleban, Matthew ♦ Lawrence, Albion ♦ Shenker, Stephen ♦ Susskind, Leonard
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2002-09-26
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Astronomy & allied sciences ♦ Physics
Subject Keyword High Energy Physics - Theory ♦ Astrophysics ♦ General Relativity and Quantum Cosmology ♦ High Energy Physics - Phenomenology ♦ physics:astro-ph ♦ physics:gr-qc ♦ physics:hep-ph ♦ physics:hep-th
Abstract Free scalar fields in de Sitter space have a one-parameter family of states invariant under the de Sitter group, including the standard thermal vacuum. We show that, except for the thermal vacuum, these states are unphysical when gravitational interactions are included. We apply these observations to the quantum state of the inflaton, and find that, at best, dramatic fine tuning is required for states other than the thermal vacuum to lead to observable features in the CMBR anisotropy.
Description Reference: JHEP 0211:037,2002
Educational Use Research
Learning Resource Type Article
Page Count 31


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