Results 11 to 20 of about 3,508 (162)
Compact gauge fields on Causal Dynamical Triangulations: a 2D case study
Journal of High Energy Physics, 2021 We discuss the discretization of Yang-Mills theories on Dynamical Triangulations in the compact formulation, with gauge fields living on the links of the dual graph associated with the triangulation, and the numerical investigation of the minimally ...
Alessandro Candido +3 more
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Perfect discretizations as a gateway to one-loop partition functions for 4D gravity
Journal of High Energy Physics, 2022 Lattice actions and amplitudes that perfectly mirror continuum physics are known as perfect discretizations. Such perfect discretizations naturally preserve the symmetries of the continuum.
Seth K. Asante, Bianca Dittrich
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A MODEL OF THREE-DIMENSIONAL LATTICE GRAVITY [PDF]
Modern Physics Letters A, 1992 A model is proposed which generates all oriented 3D simplicial complexes weighted with an invariant associated with a topological lattice gauge theory. When the gauge group is SUq(2), qn=1, it is the Turaev-Viro invariant and the model may be regarded as a nonperturbative definition of 3D simplicial quantum gravity. If one takes a finite Abelian group
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The phase structure of causal dynamical triangulations with toroidal spatial topology
Journal of High Energy Physics, 2018 We investigate the impact of topology on the phase structure of fourdimensional Causal Dynamical Triangulations (CDT). Using numerical Monte Carlo simulations we study CDT with toroidal spatial topology.
J. Ambjørn +4 more
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The higher-order phase transition in toroidal CDT
Journal of High Energy Physics, 2020 We investigate the transition between the phases B and C b observed in four-dimensional Causal Dynamical Triangulations (CDT). We find that the critical properties of CDT with toroidal spatial topology are the same as earlier observed in spherical ...
J. Ambjørn +5 more
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Journal of High Energy Physics, 2021 In the tensorial group field theory approach to quantum gravity, the theory is based on discrete building blocks and continuum spacetime is expected to emerge from their collective dynamics, possibly at criticality, via a phase transition.
Luca Marchetti +3 more
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Phase transitions in TGFT: a Landau-Ginzburg analysis of Lorentzian quantum geometric models
Journal of High Energy Physics, 2023 In the tensorial group field theory (TGFT) approach to quantum gravity, the basic quanta of the theory correspond to discrete building blocks of geometry. It is expected that their collective dynamics gives rise to continuum spacetime at a coarse grained
Luca Marchetti +3 more
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Applying gauge/gravity duality to Composite Higgs models [PDF]
EPJ Web of Conferences, 2022 The AdS/CFT correspondence and its generalization to gauge/gravity dualities provide a very useful approach into solving strongly coupled systems. We put this at work for the strongly coupled sector of Composite Higgs models.
Porod Werner
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Towards an UV fixed point in CDT gravity
Journal of High Energy Physics, 2019 CDT is an attempt to formulate a non-perturbative lattice theory of quantum gravity. We describe the phase diagram and analyse the phase transition between phase B and phase C (which is the analogue of the de Sitter phase observed for the spherical ...
J. Ambjørn +4 more
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Universal critical behavior in tensor models for four-dimensional quantum gravity
Journal of High Energy Physics, 2020 Four-dimensional random geometries can be generated by statistical models with rank-4 tensors as random variables. These are dual to discrete building blocks of random geometries. We discover a potential candidate for a continuum limit in such a model by
Astrid Eichhorn +3 more
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