Baake, Olaf Charmousis, Christos Hassaine, Mokhtar Juan, Miguel San

We construct regular, asymptotically flat black holes of higher order scalar tensor (DHOST) theories, which are obtained by making use of a generalized Kerr-Schild solution generating method. The solutions depend on a mass integration constant, admit a smooth core of chosen regularity, and generically have an inner and outer event horizon. In parti...

Pol, Alberto Roper Mandal, Sayan Brandenburg, Axel Kahniashvili, Tina

We use direct numerical simulations of decaying primordial hydromagnetic turbulence with helicity to compute the resulting gravitational wave (GW) production and its degree of circular polarization. We find a clear dependence of the polarization of the resulting GWs on the fractional helicity of the turbulent source and we show that driven magnetic...

Decoene, Valentin Martineau-Huynh, Olivier Tueros, Matìas Chiche, Simon

Very inclined extensive air showers (EAS), with both down-going and up-going trajectories, are particularly targeted by the next generation of extended radio arrays, such as GRAND. Methods to reconstruct the incoming direction, core position, primary energy and composition of showers with these specific geometries, remain to be developed. Towards t...

Betzios, Panos Gaddam, Nava Papadoulaki, Olga
Published in
Journal of High Energy Physics

We describe a unitary scattering process, as observed from spatial infinity, of massless scalar particles on an asymptotically flat Schwarzschild black hole background. In order to do so, we split the problem in two different regimes governing the dynamics of the scattering process. The first describes the evolution of the modes in the region away ...

Jedamzik, Karsten Pogosian, Levon Zhao, Gong-Bo
Published in
Communications Physics

It is generally accepted that the Universe is dominated by dark energy but the different methods to measure the Hubble constant disagree, giving origin to what is known as the "Hubble tension”. The authors demonstrate that the sole reduction of the sound horizon is not sufficient to fully resolve the Hubble tension.

Krishnan, Chethan Mohayaee, Roya Colgáin, Eoin Ó. Sheikh-Jabbari, M.M. Yin, Lu

The tension between early and late Universe probes of the Hubble constant has motivated various new FLRW cosmologies. Here, we reanalyse the Hubble tension with a recent age of the Universe constraint. This allows us to restrict attention to matter and a dark energy sector that we treat without assuming a specific model. Assuming analyticity of the...

Benakli, Karim Branchina, Carlo Lafforgue-Marmet, Gaëtan

Einstein-Maxwell-dilaton theory with non-trivial dilaton potential is known to admit asymptotically flat and (Anti-)de Sitter charged black hole solutions. We investigate the conditions for the presence of horizons as function of the parameters mass $M$, charge $Q$ and dilaton coupling strength $\alpha$. We observe that there is a value of $\alpha$...

Stakia, Anna Dorigo, Tommaso Banelli, Giovanni Bortoletto, Daniela Casa, Alessandro de Castro, Pablo Delaere, Christophe Donini, Julien Finos, Livio Gallinaro, Michele
...

Between the years 2015 and 2019, members of the Horizon 2020-funded Innovative Training Network named "AMVA4NewPhysics" studied the customization and application of advanced multivariate analysis methods and statistical learning tools to high-energy physics problems, as well as developed entirely new ones. Many of those methods were successfully us...

Soltani, Farshid Rovelli, Carlo Martin-Dussaud, Pierre

We derive an explicit expression for the transition amplitude from black to white hole horizon at the end of Hawking evaporation using covariant loop quantum gravity.

Aiello, S. Albert, A. Garre, S. Alves Aly, Z. Ambrosone, A. Ameli, F. Andre, M. Androulakis, G. Anghinolfi, M. Anguita, M.
...
Published in
The European Physical Journal C

The KM3NeT research infrastructure is under construction in the Mediterranean Sea. It consists of two water Cherenkov neutrino detectors, ARCA and ORCA, aimed at neutrino astrophysics and oscillation research, respectively. Instrumenting a large volume of sea water with ∼6200\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \u...