3 citations · 3 across the 6 of their papers we have counts for
7 papers
Exact AdS and pp-waves in multi-gravity beyond pairwise interactions
Joakim Flinckman
We construct exact anti-de Sitter (AdS) waves and pp-waves in ghost-free multi-gravity beyond pairwise interactions for an arbitrary number of vielbeins, in any space…
Complete set of tree-level scattering amplitudes of ghost-free bimetric theory
Felix Herber, Joakim Flinckman, S. F. Hassan
Bimetric theory is an extension of general relativity that perturbatively describes one massless and one massive graviton. It admits observationally viable cosmologies, passes loca…
Multi-gravity cosmology beyond pairwise interactions
J. Flinckman
We develop the cosmological framework for Hassan--Schmidt-May multi-gravity, a ghost-free extension of bimetric theory with genuinely non-pairwise interactions of multiple spin-2 f…
On the Uniqueness of Ghost-Free Multi-Gravity -- II: Constraining antisymmetrised multi spin-2 interactions
Joakim Flinckman, S. F. Hassan
So far, only a single theory of multiple spin-2 fields is known that features genuine multi-field interactions while remaining free of Boulware-Deser-type ghost instabilities. In t…
Canonical Vielbeins for General Relativity: D + 1 Decomposition and Constraint Analysis
Joakim Flinckman, Daniel Blixt
We provide a self-contained derivation of the Hamiltonian formulation of General Relativity in vielbein variables in dimensions. Starting from the Einstein--Hilbert action…
Existence of ghost-eliminating constraints in multivielbein theory
J. Flinckman, S. F. Hassan
We perform a Hamiltonian constraint analysis of the multivielbein theory proposed in [Phys. Rev. Lett. 122 (2019) 251101]. The analysis shows that the secondary constraints have th…
Mass spectrum and linear perturbations of ghost-free multi-spin-2 theory
J. Flinckman, S. F. Hassan
Motivated by the spin-2 nature of gravity, we consider a theory of N interacting spin-2 fields, formulated in terms of vielbeins which have been argued to be free of the Boulware-D…