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
12 papers · 2 filters
Null twisted geometries
Simone Speziale, Mingyi Zhang
We define and investigate a quantisation of null hypersurfaces in the context of loop quantum gravity on a fixed graph. The main tool we use is the parametrisation of the theory in…
Radiative corrections to the EPRL-FK spinfoam graviton
Aldo Riello
I study the corrections engendered by the insertion of a "melon" graph in the bulk of the first-order spinfoam used for the graviton propagator. I find that these corrections are h…
Why are the effective equations of loop quantum cosmology so accurate?
Carlo Rovelli, Edward Wilson-Ewing
We point out that the relative Heisenberg uncertainty relations vanish for non-compact spaces in homogeneous loop quantum cosmology. As a consequence, for sharply peaked states qua…
Quantum-Reduced Loop-Gravity: Relation with the Full Theory
Emanuele Alesci, Francesco Cianfrani, Carlo Rovelli
The quantum-reduced loop-gravity technique has been introduced for dealing with cosmological models. We show that it can be applied rather generically: anytime the spatial metric c…
Coupling and thermal equilibrium in general-covariant systems
Goffredo Chirco, Hal M. Haggard, Carlo Rovelli
A fully general-covariant formulation of statistical mechanics is still lacking. We take a step toward this theory by studying the meaning of statistical equilibrium for coupled, p…
Evidence for Maximal Acceleration and Singularity Resolution in Covariant Loop Quantum Gravity
Carlo Rovelli, Francesca Vidotto
A simple argument indicates that covariant loop gravity (spinfoam theory) predicts a maximal acceleration, and hence forbids the development of curvature singularities. This suppor…
Covariant Loop Quantum Gravity, Low Energy Perturbation Theory, and Einstein Gravity with High Curvature UV Corrections
Muxin Han
A low-energy perturbation theory is developed from the nonperturbative framework of covariant Loop Quantum Gravity (LQG) by employing the background field method. The resulting per…
The boundary is mixed
Eugenio Bianchi, Hal M. Haggard, Carlo Rovelli
We show that Oeckl's boundary formalism incorporates quantum statistical mechanics naturally, and we formulate general-covariant quantum statistical mechanics in this language. We…
Semiclassical Analysis of Spinfoam Model with a Small Barbero-Immirzi Parameter
Muxin Han
We study the semiclassical behavior of Lorentzian Engle-Pereira-Rovelli-Livine (EPRL) spinfoam model, by taking into account of the sum over spins in the large spin regime. The lar…
On Spinfoam Models in Large Spin Regime
Muxin Han
We study the semiclassical behavior of Lorentzian Engle-Pereira-Rovelli-Livine (EPRL) spinfoam model, by taking into account the sum over spins in the large spin regime. We also em…
Self-Energy of the Lorentzian EPRL-FK Spin Foam Model of Quantum Gravity
Aldo Riello
We calculate the most divergent contribution to the non-degenerate sector of the self-energy (or "melonic") graph in the context of the Lorentzian EPRL-FK Spin Foam model of Quantu…
Death and resurrection of the zeroth principle of thermodynamics
Hal M. Haggard, Carlo Rovelli
The zeroth principle of thermodynamics in the form "temperature is uniform at equilibrium" is notoriously violated in relativistic gravity. Temperature uniformity is often derived…