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45 papers · 1 filter
Emergence of Gravity's Dynamical and Topological Sectors from Pre-geometry
Andrea Addazi, Giuseppe Meluccio
We identify the complete set of fundamental building blocks for a 4D pre-geometric theory of gravity. Based on a gauge theory of or coupled to a Higgs-like fiel…
Black Holes, Gravitational Waves and Space-Time Singularities Lemaitre Conference 2024
Massimo Bianchi, Sergio Luigi Cacciatori, Matteo Galaverni +2
This editorial introduces the topical collection arising from the Lemaitre Conference 2024 - the second in a series of meetings dedicated to the scientific legacy of Georges Lemait…
Energy conditions in static, spherically symmetric spacetimes and effective geometries
Zi-Liang Wang, Emmanuele Battista
Classical energy conditions are investigated in generic static and spherically symmetric spacetimes. In setups with nonconstant , the appearance of horizons can sign…
Minisuperspace Cosmology in Extended Geometric Trinity of Gravity
Emmanuele Battista, Salvatore Capozziello, Stefano Pastore
We investigate Extended Geometric Trinity of Gravity at both classical and quantum cosmological levels using the minisuperspace approach. Adopting Noether symmetries to select viab…
Shadow signatures and energy accumulation in Lorentzian-Euclidean black holes
Emmanuele Battista, Salvatore Capozziello, Che-Yu Chen
The Lorentzian-Euclidean black hole has been recently introduced as a geodesically complete spacetime featuring a signature shift at the event horizon where causal geodesics are pr…
(Lovelock) inflation: explaining the ACT data and equivalence to Higgs-Gauss-Bonnet inflation
Andrea Addazi, Yermek Aldabergenov, Daulet Berkimbayev +1
We revisit the Starobinsky model of inflation in light of recent data from the Atacama Cosmology Telescope (ACT), which indicates a potential preference for a slightly larger scala…