2016/10/31 by Christopher D. Carone, Joshua Erlich, Diana Vaman · 13 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Canonical quantum gravity #Cosmological constant #Cosmology and Gravitation Theories #Entropic gravity #Fermion #Gauge theory #Graviton #Massless particle #Noncommutative and Quantum Gravity Theories #Quantum gravity #Scalar (mathematics) #Tensor (intrinsic definition) #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep03(2017)134
published in Journal of High Energy Physics 2017(3) (Springer Nature) · 25 pages, 6 figures
arxiv created 2016/11/03 · openalex created_date 2016/11/04 · openalex publication_date 2017/03/01 · arxiv updated 2017/04/26 · openalex updated_date 2026/08/06
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. We comment on the cosmological constant problem and the generalization to theories with fermions and gauge fields.