4 papers · 1 filter
Critical reassessment of the restricted Weyl symmetry
Dražen Glavan, Ruggero Noris, Tom Zlosnik
A class of globally scale-invariant scalar-tensor theories have been proposed to be invariant under a larger class of transformations that take the form of local Weyl transformatio…
Removing spurious degrees of freedom from EFT of gravity
Dražen Glavan, Shinji Mukohyama, Tom Zlosnik
In the effective field theory approach to gravity, the Lagrangian density for general relativity is supplemented by generally covariant terms of higher order in the Riemann tensor…
Photon propagator for inflation in the general covariant gauge
Silvije Domazet, Dražen Glavan, Tomislav Prokopec
Photon propagator for power-law inflation is considered in the general covariant gauges within the canonical quantization formalism. Photon mode functions in covariant gauges are c…
Hamiltonian analysis of metric-affine- theory
Dražen Glavan, Tom Zlosnik, Chunshan Lin
Determining the number of propagating degrees of freedom in metric-affine theories of gravity requires the use of Hamiltonian constraint analysis, except in some subclasses of theo…