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most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

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hep-th2025

Unitarization of gravity

Iñigo Asiáin, Antonio Dobado, Domènec Espriu

We make use of the improved K-matrix algorithm to obtain unitarized amplitudes in gravity (the so-called Starobisnsky model, of cosmological relevance). The procedure is o…

hep-th2025

A general action for a particle in 2+1 anti-de Sitter space

Carles Batlle, Joaquim Gomis

We discuss a general action for a particle in AdS using the non-linear realization framework. Critical sectors are found and characterized in terms of the parameters appearing…

hep-th2025

Nonlocal Mechanics

Carlos Heredia, Josep Llosa

We introduce a Hamiltonian framework for nonlocal Lagrangian systems without relying on infinite-derivative expansions. Starting from a (trajectory-based) variational principle and…

hep-th2025★ 8 cited

Quantum Transparency of Near-extremal Black Holes

Roberto Emparan, Stefano Trezzi

We investigate the scattering of electromagnetic and gravitational waves off a Reissner-Nordström black hole in the low-temperature regime where the near-horizon throat experiences…

hep-th2025★ 12 cited

Holographic explorations of regular black holes in pure gravity

Monserrat Aguayo, Leonardo Gajardo, Nicolás Grandi +3

It has been recently established in \textit{Phys.Lett.B 861 (2025) 139260} that regular, asymptotically flat black holes exist in pure gravity theories in dimension greater than fo…

hep-th2025★ 6 cited

Quantum censors: backreaction builds horizons

Antonia M. Frassino, Robie A. Hennigar, Juan F. Pedraza +1

Cosmic censorship posits spacetime singularities remain concealed behind event horizons, preserving the determinism of General Relativity. While quantum gravity is expected to reso…