output
20022011
most citedQuantum Nature of the Big Bang: Improved dynamics

1.2k citations

Showing 2006 · gr-qcShow all

14 papers · 2 filters

gr-qc200620 cited

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…

gr-qc200624 cited

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…

gr-qc200621 cited

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…

gr-qc200611 cited

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…

gr-qc20061.2k cited

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…

gr-qc200629 cited

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…