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We investigate how a Higgs mechanism could be responsible for the emergence of gravity in extensions of Einstein theory, with a suitable low energy limit. In this scenario, at high energies, symmetry restoration could 'turn off'...

cosmology quantum gravity Higgs mechanism varying constants

scientific understanding Intelligibility of theories quantum gravity Emergence of spacetime

In this paper we have two aims: first, to draw attention to the close connexion between interpretation and scientific understanding; second, to give a detailed account of how theories without a spacetime can be interpreted, and...

interpretation quantum gravity scientific understanding Spacetime visualisation

AbstractIn General Relativity in Hamiltonian form, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best, because the Hamiltonian is a sum of first-class...

article constrained Hamiltonian dynamics General Relativity problem of time quantum gravity Variational principles Spinors Geometric objects Lie derivatives Einstein–Dirac equations Nonlinear group realizations

Abstract: In General Relativity in Hamiltonian form, change has seemed to be missing, defined only asymptotically, or otherwise obscured at best, because the Hamiltonian is a sum of first-class constraints and a boundary term...

article constrained Hamiltonian dynamics General Relativity problem of time quantum gravity Variational principles Spinors Geometric objects Lie derivatives Einstein–Dirac equations Nonlinear group realizations