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Title: Late-time structure of the Bunch-Davies de Sitter wavefunction

We examine the late time behavior of the Bunch-Davies wavefunction for interacting light fields in a de Sitter background. We use perturbative techniques developed in the framework of AdS/CFT, and analytically continue to compute tree and loop level contributions to the Bunch-Davies wavefunction. We consider self-interacting scalars of general mass, but focus especially on the massless and conformally coupled cases. We show that certain contributions grow logarithmically in conformal time both at tree and loop level. We also consider gauge fields and gravitons. The four-dimensional Fefferman-Graham expansion of classical asymptotically de Sitter solutions is used to show that the wavefunction contains no logarithmic growth in the pure graviton sector at tree level. Finally, assuming a holographic relation between the wavefunction and the partition function of a conformal field theory, we interpret the logarithmic growths in the language of conformal field theory.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [3] ;  [1]
  1. Stanford Institute of Theoretical Physics, Stanford University, Stanford (United States)
  2. Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge (United States)
  3. (United States)
Publication Date:
OSTI Identifier:
22458407
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 11; Other Information: PUBLISHER-ID: JCAP11(2015)048; OAI: oai:repo.scoap3.org:12868; Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Sponsoring Org:
SCOAP3, CERN, Geneva (Switzerland)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANTI DE SITTER GROUP; CONFORMAL INVARIANCE; DE SITTER SPACE; FIELD THEORIES; FOUR-DIMENSIONAL CALCULATIONS; GRAVITONS; MASS; MATHEMATICAL SOLUTIONS; PARTITION FUNCTIONS; STRING MODELS; STRING THEORY; WAVE FUNCTIONS