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gr-qc2026
Gauge-invariant cosmological perturbations in Type 3 New General Relativity and background-hierarchy bounds
Kyosuke Tomonari, Daniel Blixt, Sebastian Bahamonde
In this paper, we investigate background-hierarchy bounds in Type~3 of New General Relativity (NGR). These bounds arise when the contribution associated with the evolution of the b…
gr-qc2026
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…