3.4k citations
- National Institute for Subatomic PhysicsNL871 papers
- Centre National de la Recherche ScientifiqueFR771 papers
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- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT517 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR514 papers
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16 papers · 2 filters
Mechanics of higher-dimensional black holes in asymptotically anti-de Sitter space-times
Abhay Ashtekar, Tomasz Pawlowski, Chris Van Den Broeck
We construct a covariant phase space for Einstein gravity in dimensions d>=4 with negative cosmological constant, describing black holes in local equilibrium. Thus, space-times und…
Quantum Gravity and Matter: Counting Graphs on Causal Dynamical Triangulations
D. Benedetti, R. Loll
An outstanding challenge for models of non-perturbative quantum gravity is the consistent formulation and quantitative evaluation of physical phenomena in a regime where geometry a…
Problems and hopes in nonsymmetric gravity
Tomas Janssen, Tomislav Prokopec
We consider the linearized nonsymmetric theory of gravitation (NGT) within the background of an expanding universe and near a Schwarzschild mass. We show that the theory always dev…
Exploring the diffeomorphism invariant Hilbert space of a scalar field
Hanno Sahlmann
As a toy model for the implementation of the diffeomorphism constraint, the interpretation of the resulting states, and the treatment of ordering ambiguities in loop quantum gravit…
Quantum Nature of the Big Bang: Improved dynamics
Abhay Ashtekar, Tomasz Pawlowski, Parampreet Singh
An improved Hamiltonian constraint operator is introduced in loop quantum cosmology. Quantum dynamics of the spatially flat, isotropic model with a massless scalar field is then st…
The emergence of background geometry from quantum fluctuations
J. Ambjorn, R. Janik, W. Westra +1
We show how the quantization of two-dimensional gravity leads to an (Euclidean) quantum space-time where the average geometry is that of constant negative curvature and where the H…