Results 11 to 20 of about 1,368,154 (362)
An approach to quantum 2D gravity
Physics Letters B, 2023 We consider a model of 2D gravity with the action quadratic in curvature and represent path integrals as integrals over the SL(2,R) invariant Gaussian functional measure.
Vladimir V. Belokurov +1 more
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Extensions of 2D Gravity [PDF]
International Journal of Modern Physics D, 1993 After reviewing some aspects of gravity in two dimensions, it is shown that non-trivial embeddings of sl(2) in a semi-simple (super) Lie algebra give rise to a very large class of extensions of 2D gravity.
Sevrin, A.
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Damaging 2D Quantum Gravity [PDF]
Physics Letters B, 1993 We investigate numerically the behaviour of damage spreading in a Kauffman cellular automaton with quenched rules on a dynamical $\phi^3$ graph, which is equivalent to coupling the model to discretized 2D gravity.
Ambjørn +33 more
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Quenching 2D Quantum Gravity [PDF]
Physics Letters B, 1994 We simulate the Ising model on a set of fixed random $\phi^3$ graphs, which corresponds to a {\it quenched} coupling to 2D gravity rather than the annealed coupling that is usually considered.
Agishtein +38 more
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2D Stress Tensor for 4D Gravity. [PDF]
Physical Review Letters, 2016 We use the subleading soft-graviton theorem to construct an operator T_{zz} whose insertion in the four-dimensional tree-level quantum gravity S matrix obeys the Virasoro-Ward identities of the energy momentum tensor of a two-dimensional conformal field ...
D. Kapec +3 more
semanticscholar +5 more sources
Generalized 2D dilaton gravity and kinetic gravity braiding [PDF]
Classical and Quantum Gravity, 2019 We show explicitly that the nonminimal coupling between the scalar field and the Ricci scalar in 2D dilaton gravity can be recast in the form of kinetic gravity braiding (KGB).
Kazufumi Takahashi, Tsutomu Kobayashi
semanticscholar +4 more sources
Wormholes in 2d Horǎva-Lifshitz quantum gravity [PDF]
Physics Letters B, 2021 We quantize the two-dimensional projectable Horǎva-Lifshitz gravity with a bi-local as well as space-like wormhole interaction. The resulting quantum Hamiltonian coincides with the one obtained through summing over all genus in the string field theory ...
Jan Ambjorn +3 more
doaj +6 more sources
A 2D Inspired 4D Theory of Gravity [PDF]
Physics Letters B, 1994 Coadjoint orbits of the Virasoro and Kac-Moody algebras provide geometric actions for matter coupled to gravity and gauge fields in two dimensions. However, the Gauss' law constraints that arise from these actions are not necessarily endemic to two ...
Alekseev +9 more
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Scale-dependent Hausdorff dimensions in 2d gravity [PDF]
Physics Letters B, 2014 By appropriate scaling of coupling constants a one-parameter family of ensembles of two-dimensional geometries is obtained, which interpolates between the ensembles of (generalized) causal dynamical triangulations and ordinary dynamical triangulations ...
J. Ambjørn, T. Budd, Y. Watabiki
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Matrix models of 2d gravity [PDF]
, 1991 These are introductory lectures for a general audience that give an overview of the subject of matrix models and their application to random surfaces, 2d gravity, and string theory. They are intentionally 1.5 years out of date. 0.
Ginsparg, P.
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