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Noether charges in the geometrical trinity of gravity
Jose Beltrán Jiménez, Tomi S. Koivisto
The Noether currents are derived in a generic metric-affine theory of gravity, and the holographic nature of the gravitational entropy and energy-momentum is clarified. The main re…
Cosmological black holes are not described by the Thakurta metric: LIGO-Virgo bounds on PBHs remain unchanged
Gert Hütsi, Tomi Koivisto, Martti Raidal +2
We show that the physical conditions which induce the Thakurta metric, recently studied by Bœhm {\it et al.} in the context of time-dependent black hole masses, correspond to a sin…
Accidental gauge symmetries of Minkowski spacetime in Teleparallel theories
Jose Beltrán Jiménez, Tomi S. Koivisto
In this paper, we provide a general framework for the construction of the Einstein frame within non-linear extensions of the teleparallel equivalents of General Relativity. These i…
Modified Gravity and Cosmology: An Update by the CANTATA Network
Emmanuel N. Saridakis, Ruth Lazkoz, Vincenzo Salzano +50
General Relativity and the CDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as…
Scale-invariant cosmology in de Sitter gauge theory
Tomi Koivisto, Luxi Zheng
The Planck mass and the cosmological constant determine the minimum and the maximum distances in the physical universe. A relativistic theory that takes into account a fundamental…