Quantum gravity from causal dynamical triangulations: a review
R Loll - Classical and Quantum Gravity, 2019 - iopscience.iop.org
This topical review gives a comprehensive overview and assessment of recent results in
causal dynamical triangulations, a modern formulation of lattice gravity, whose aim is to …
causal dynamical triangulations, a modern formulation of lattice gravity, whose aim is to …
[HTML][HTML] Critical reflections on asymptotically safe gravity
Asymptotic safety is a theoretical proposal for the ultraviolet completion of quantum field
theories, in particular for quantum gravity. Significant progress on this program has led to a …
theories, in particular for quantum gravity. Significant progress on this program has led to a …
Spacetime foam: a review
S Carlip - Reports on Progress in Physics, 2023 - iopscience.iop.org
More than 65 years ago, John Wheeler suggested that quantum uncertainties of the metric
would be of order one at the Planck scale, leading to large fluctuations in spacetime …
would be of order one at the Planck scale, leading to large fluctuations in spacetime …
Why quantum gravity?
C Kiefer - Approaches to Fundamental Physics: An Assessment …, 2007 - Springer
Quantum theory seems to be a universal framework for physical theories. In fact, most of the
interactions found in Nature are already successfully accommodated into this framework …
interactions found in Nature are already successfully accommodated into this framework …
Nonperturbative quantum gravity
Asymptotic safety describes a scenario in which general relativity can be quantized as a
conventional field theory, despite being nonrenormalizable when expanding it around a …
conventional field theory, despite being nonrenormalizable when expanding it around a …
Lorentzian quantum gravity and the graviton spectral function
We present the first direct and nonperturbative computation of the graviton spectral function
in quantum gravity. This is achieved with the help of a novel Lorentzian renormalization …
in quantum gravity. This is achieved with the help of a novel Lorentzian renormalization …
Gravity's rainbow
J Magueijo, L Smolin - Classical and Quantum Gravity, 2004 - iopscience.iop.org
Nonlinear special relativity (or doubly special relativity) is a simple framework for encoding
properties of flat quantum spacetime. In this paper, we show how this formalism may be …
properties of flat quantum spacetime. In this paper, we show how this formalism may be …
[HTML][HTML] Quantum gravity: a fluctuating point of view
JM Pawlowski, M Reichert - Frontiers in Physics, 2021 - frontiersin.org
In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a
functional renormalization group approach that disentangles dynamical metric fluctuations …
functional renormalization group approach that disentangles dynamical metric fluctuations …
Classical sequential growth dynamics for causal sets
DP Rideout, RD Sorkin - Physical Review D, 1999 - APS
Starting from certain causality conditions and a discrete form of general covariance, we
derive a very general family of classically stochastic, sequential growth dynamics for causal …
derive a very general family of classically stochastic, sequential growth dynamics for causal …
Emergence of a 4D world from causal quantum gravity
Causal Dynamical Triangulations in four dimensions provide a background-independent
definition of the sum over geometries in nonperturbative quantum gravity, with a positive …
definition of the sum over geometries in nonperturbative quantum gravity, with a positive …