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Title: Emergent gravity from vanishing energy-momentum tensor

A constraint of vanishing energy-momentum tensor is motivated by a variety of perspectives on quantum gravity. We demonstrate in a concrete example how this constraint leads to a metric-independent theory in which quantum gravity emerges as a nonperturbative artifact of regularization-scale physics. We analyze a scalar theory similar to the Dirac-Born-Infeld (DBI) theory with vanishing gauge fields, with the DBI Lagrangian modulated by a scalar potential. In the limit of a large number of scalars, we explicitly demonstrate the existence of a composite massless spin-2 graviton in the spectrum that couples to matter as in Einstein gravity. As a result, we comment on the cosmological constant problem and the generalization to theories with fermions and gauge fields.
Authors:
 [1] ;  [1] ;  [2]
  1. College of William and Mary, Williamsburg, VA (United States)
  2. Univ. of Virginia, Charlottesville, VA (United States)
Publication Date:
Grant/Contract Number:
SC0007894
Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 3; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Research Org:
College of William and Mary, Williamsburg, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; models of quantum gravity; effective field theories
OSTI Identifier:
1361210