Quantum gravity, dynamical phase-space and string theory

Laurent Freidel, Robert G. Leigh, Djordje Minic

Research output: Contribution to journalArticlepeer-review


In a natural extension of the relativity principle, we speculate that a quantum theory of gravity involves two fundamental scales associated with both dynamical spacetime as well as dynamical momentum space. This view of quantum gravity is explicitly realized in a new formulation of string theory which involves dynamical phase-space and in which spacetime is a derived concept. This formulation naturally unifies symplectic geometry of Hamiltonian dynamics, complex geometry of quantum theory and real geometry of general relativity. The spacetime and momentum space dynamics, and thus dynamical phase-space, is governed by a new version of the renormalization group (RG).

Original languageEnglish (US)
Article number1442006
JournalInternational Journal of Modern Physics D
Issue number12
StatePublished - Oct 16 2014


  • Quantum gravity
  • string theory

ASJC Scopus subject areas

  • Mathematical Physics
  • Astronomy and Astrophysics
  • Space and Planetary Science


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