output
19922026
most citedSciPy 1.0--Fundamental Algorithms for Scientific Computing in Python

40.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2016 · gr-qcShow all

13 papers · 2 filters

gr-qc2016★ 19 cited

A note on the Poisson bracket of 2d smeared fluxes in loop quantum gravity

Alberto S. Cattaneo, Alejandro Perez

We show that the non-Abelian nature of geometric fluxes---the corner-stone in the definition of quantum geometry in the framework of loop quantum gravity (LQG)---follows directly f…

gr-qc2016★ 26 cited

Gravitational birefringence of light in Robertson-Walker cosmologies

C. Duval, T. Schucker

The spacetime evolution of massless spinning particles in a Robertson-Walker background is derived using the deterministic system of equations of motion due to Papapetrou, Souriau…

gr-qc2016★ 49 cited

Boosting Wigner's nj-symbols

Simone Speziale

We study the SL(2,C) Clebsch-Gordan coefficients appearing in the lorentzian EPRL spin foam amplitudes for loop quantum gravity. We show how the amplitudes decompose into SU(2) nj-…

gr-qc2016★ 3 cited

Analytic continuation of the rotating black hole state counting

Jibril Ben Achour, Karim Noui, Alejandro Perez

In loop quantum gravity, a spherical black hole can be described in terms of a Chern-Simons theory on a punctured 2-sphere. The sphere represents the horizon. The punctures are the…

gr-qc2016★ 26 cited

Quantum Gravity Effects around Sagittarius A*

Hal M. Haggard, Carlo Rovelli

Recent VLBI observations have resolved Sagittarius A* at horizon scales. The Event Horizon Telescope is expected to provide increasingly good images of the region around the Schwar…

gr-qc2016★ 3 cited

Statistical mechanics of covariant systems with multi-fingered time

Goffredo Chirco, Thibaut Josset

Recently, in [Class. Quantum Grav. 33 (2016) 045005], the authors proposed a new approach extending the framework of statistical mechanics to reparametrization-invariant systems wi…

gr-qc2016★ 122 cited

Realistic Observable in Background-Free Quantum Gravity: the Planck-Star Tunnelling-Time

Marios Christodoulou, Carlo Rovelli, Simone Speziale +1

A gravitationally collapsed object can bounce-out from its horizon via a tunnelling process that violates the classical equations in a finite region. Since tunnelling is a non-pert…

gr-qc2016★ 27 cited

Conformal and projective symmetries in Newtonian cosmology

C. Duval, G. W. Gibbons, P. A. Horváthy

Definitions of non-relativistic conformal transformations are considered both in the Newton-Cartan and in the Kaluza-Klein-type Eisenhart/Bargmann geometrical frameworks. The symme…

gr-qc2016★ 56 cited

On the volume inside old black holes

Marios Christodoulou, Tommaso De Lorenzo

Black holes that have nearly evaporated are often thought of as small objects, due to their tiny exterior area. However, the horizon bounds large spacelike hypersurfaces. A compell…

gr-qc2016★ 224 cited

Dark energy as the weight of violating energy conservation

Thibaut Josset, Alejandro Perez, Daniel Sudarsky

In this letter, we consider the possibility of reconciling metric theories of gravitation with violation of the conservation of energy-momentum. Under some circumstances, this can…

gr-qc2016★ 27 cited

Exact Renormalisation Group Equations and Loop Equations for Tensor Models

Thomas Krajewski, Reiko Toriumi

In this paper, we review some general formulations of exact renormalisation group equations and loop equations for tensor models and tensorial group field theories. We illustrate t…

gr-qc2016★ 40 cited

Observational constraints on cosmological future singularities

Jose Beltran Jimenez, Ruth Lazkoz, Diego Saez-Gomez +1

In this work we consider a family of cosmological models featuring future singularities. This type of cosmological evolution is typical of dark energy models with an equation of st…

gr-qc2016

Einstein-Cartan, Bianchi I and the Hubble Diagram

Sami R. ZouZou, Andre Tilquin, Thomas Schucker

We try to solve the dark matter problem in the fit between theory and the Hubble diagram of supernovae by allowing for torsion via Einstein-Cartan's gravity and for anisotropy via…