Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.9k papers
- Centre de physique des particules de MarseilleFR2.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR2.6k papers
- University of ManchesterGB2.4k papers
- University of OxfordGB2.3k papers
- University of CambridgeGB2.3k papers
- University of EdinburghGB2.3k papers
- Heidelberg UniversityDE2.2k papers
- National Institute for Subatomic PhysicsNL2.1k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR2.1k papers
- Sorbonne UniversitéFR2.1k papers
17 papers · 2 filters
Weyl gravity and Cartan geometry
Jeremy Attard, Jordan François, Serge Lazzarini
We point out that the Cartan geometry known as the second-order conformal structure provides a natural differential geometric framework underlying gauge theories of conformal gravi…
Improved Black Hole Fireworks: Asymmetric Black-Hole-to-White-Hole Tunneling Scenario
Tommaso De Lorenzo, Alejandro Perez
A new scenario for gravitational collapse has been recently proposed by Haggard and Rovelli. Presenting the model under the name of black hole fireworks, they claim that the accumu…
The Archimedes experiment
Enrico Calloni, S. Caprara, Martina De Laurentis +14
Archimedes is an INFN-funded pathfinder experiment aimed at verifying the feasibility of measuring the interaction of vacuum fluctuations with gravity. The final experiment will me…
Polchinski's exact renormalisation group for tensorial theories: Gaussian universality and power counting
Thomas Krajewski, Reiko Toriumi
In this paper, we use the exact renormalisation in the context of tensor models and tensorial group field theories. As a byproduct, we rederive Gaussian universality for random ten…
Minimal cosmography
Federico Piazza, Thomas Schucker
The minimal requirement for cosmography - a nondynamical description of the universe - is a prescription for calculating null geodesics, and timelike geodesics as a function of the…
Non-singular rotating black hole with a time delay in the center
Tommaso De Lorenzo, Andrea Giusti, Simone Speziale
As proposed by Bambi and Modesto, rotating non-singular black holes can be constructed via the Newman-Janis algorithm. Here we show that if one starts with a modified Hayward black…
Cascading dust inflation in Born-Infeld gravity
Jose Beltran Jimenez, Lavinia Heisenberg, Gonzalo J. Olmo +1
In the framework of Born-Infeld inspired gravity theories, which deviates from General Relativity (GR) in the high curvature regime, we discuss the viability of Cosmic Inflation wi…
Spacetimes with vector distortion: Inflation from generalised Weyl geometry
Jose Beltrán Jiménez, Tomi S. Koivisto
Spacetime with general linear vector distortion is introduced. Thus, the torsion and the nonmetricity of the affine connection are assumed to be proportional to a vector field (and…
Distinguishing f(R) theories from general relativity by gravitational lensing effect
Hongguang Liu, Xin Wang, Haida Li +1
The post-Newtonian formulation of a general class of f(R) theories is set up to 3rd order approximation. It turns out that the information of a specific form of f(R) gravity is enc…
Piercing the Vainshtein screen with anomalous gravitational wave speed: Constraints on modified gravity from binary pulsars
Jose Beltran Jimenez, Federico Piazza, Hermano Velten
By using observations of the Hulse-Taylor pulsar we constrain the gravitational wave (GW) speed to the level of . We apply this result to scalar-tensor theories that gener…
Group field theories generating polyhedral complexes
Johannes Thürigen
Group field theories are a generalization of matrix models which provide both a second quantized reformulation of loop quantum gravity as well as generating functions for spin foam…
Neutron Stars in Rastall Gravity
A. M. Oliveira, H. E. S. Velten, J. C. Fabris +1
We calculate static and spherically symmetric solutions for the Rastall modification of gravity to describe Neutron Stars (NS). The key feature of the Rastall gravity is the non-co…
Black hole spectroscopy from Loop Quantum Gravity models
Aurelien Barrau, Xiangyu Cao, Karim Noui +1
Using Monte Carlo simulations, we compute the integrated emission spectra of black holes in the framework of Loop Quantum Gravity (LQG). The black hole emission rates are governed…
Tensor perturbations in a general class of Palatini theories
Jose Beltrán Jiménez, Lavinia Heisenberg, Gonzalo J. Olmo
We study a general class of gravitational theories formulated in the Palatini approach and derive the equations governing the evolution of tensor perturbations. In the absence of t…
Curvatures and discrete Gauss-Codazzi equation in (2+1)-dimensional loop quantum gravity
Seramika Ariwahjoedi, Jusak Sali Kosasih, Carlo Rovelli +1
We derive the Gauss-Codazzi equation in the holonomy and plane-angle representations and we use the result to write a Gauss-Codazzi equation for a discrete (2+1)-dimensional manifo…
Statistical mechanics of reparametrization-invariant systems. It takes three to tango
Goffredo Chirco, Thibaut Josset, Carlo Rovelli
It is notoriously difficult to apply statistical mechanics to generally covariant systems, because the notions of time, energy and equilibrium are seriously modified in this contex…
Compact phase space, cosmological constant, discrete time
Carlo Rovelli, Francesca Vidotto
We study the quantization of geometry in the presence of a cosmological constant, using a discretiza- tion with constant-curvature simplices. Phase space turns out to be compact an…