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Quantum Einstein gravity

open access: yesNew Journal of Physics, 2012
We give a pedagogical introduction to the basic ideas and concepts of the Asymptotic Safety program in Quantum Einstein Gravity. Using the continuum approach based upon the effective average action, we summarize the state of the art of the field with a particular focus on the evidence supporting the existence of the non-trivial renormalization group ...
Reuter, Martin, Saueressig, Frank
openaire   +2 more sources

Towards the map of quantum gravity [PDF]

open access: yes, 2018
In this paper we point out some possible links between different approaches to quantum gravity and theories of the Planck scale physics. In particular, connections between Loop Quantum Gravity, Causal Dynamical Triangulations, Ho\v{r}ava-Lifshitz gravity,
Mielczarek, Jakub, Trześniewski, Tomasz
core   +2 more sources

Newtonian quantum gravity. [PDF]

open access: yesPhysics Essays, 2010
A Newtonian approach to quantum gravity is studied. At least for weak gravitational fields it should be a valid approximation. Such an approach could be used to point out problems and prospects inherent in a more exact theory of quantum gravity, yet to be discovered. Newtonian quantum gravity, e.g., shows promise for prohibiting black holes altogether (
openaire   +2 more sources

Spread complexity and topological transitions in the Kitaev chain

open access: yesJournal of High Energy Physics, 2023
A number of recent works have argued that quantum complexity, a well-known concept in computer science that has re-emerged recently in the context of the physics of black holes, may be used as an efficient probe of novel phenomena such as quantum chaos ...
Pawel Caputa   +5 more
doaj   +1 more source

Chiral Loop Quantum Supergravity and Black Hole Entropy

open access: yesUniverse, 2023
Recent work has shown that local supersymmetry on a spacetime boundary in N-extended AdS supergravity in chiral variables implies coupling to a boundary OSp(N|2)C super Chern–Simons theory.
Konstantin Eder, Hanno Sahlmann
doaj   +1 more source

Holographic description of quantum black hole on a computer

open access: yes, 2013
The discovery of the fact that black holes radiate particles and eventually evaporate led Hawking to pose the well-known information loss paradox.
Hanada, Masanori   +3 more
core   +1 more source

Quantum W_3 Gravity

open access: yes, 1991
14 pages. Contribution to the proceedings of the Trieste Summer School on High Energy Physics and Cosmology, July-Aug ...
Schoutens, K.   +2 more
openaire   +4 more sources

Fermionic quantum gravity [PDF]

open access: yesNuclear Physics B, 2001
We study the statistical mechanics of random surfaces generated by NxN one-matrix integrals over anti-commuting variables. These Grassmann-valued matrix models are shown to be equivalent to NxN unitary versions of generalized Penner matrix models. We explicitly solve for the combinatorics of 't Hooft diagrams of the matrix integral and develop an ...
Paniak, L. D., Szabo, R. J.
openaire   +2 more sources

Dynamical Properties of the Mukhanov-Sasaki Hamiltonian in the Context of Adiabatic Vacua and the Lewis-Riesenfeld Invariant

open access: yesUniverse, 2019
We use the method of the Lewis-Riesenfeld invariant to analyze the dynamical properties of the Mukhanov-Sasaki Hamiltonian and, following this approach, investigate whether we can obtain possible candidates for initial states in the context of inflation ...
Max Joseph Fahn   +2 more
doaj   +1 more source

From Classical To Quantum Gravity: Introduction to Loop Quantum Gravity

open access: yes, 2013
We present an introduction to the canonical quantization of gravity performed in loop quantum gravity, based on lectures held at the 3rd quantum geometry and quantum gravity school in Zakopane in 2011.
Giesel, Kristina, Sahlmann, Hanno
core   +1 more source

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