Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Németh, Dániel"'
We consider 4D $SU(N)$ gauge theories coupled to gravity in the Causal Dynamical Triangulations (CDT) approach, focusing on the topological classification of the gauge path-integral over fixed triangulations. We discretize the topological charge and,
Externí odkaz:
http://arxiv.org/abs/2411.12668
Causal Dynamical Triangulations (CDT) is a lattice theory of quantum gravity. It is shown how to identify the IR and the UV limits of this lattice theory with similar limits studied using the continuum, functional renormalization group (FRG) approach
Externí odkaz:
http://arxiv.org/abs/2411.02330
We compare the effective action of the scale factor obtained from lattice quantum gravity (in the form of Causal Dynamical Triangulations (CDT)) to the corresponding effective action obtained from the simplest Functional Renormalization Group (FRG) c
Externí odkaz:
http://arxiv.org/abs/2408.07808
Autor:
Németh, Dániel
Publikováno v:
Névtani Értesítő, Vol 38, Pp 307-309 (2016)
Externí odkaz:
https://doaj.org/article/1f51e433956546dab0a6ec682531ec73
Autor:
Németh, Dániel
This is a Ph.D. thesis that presents the author's findings in the area of Causal Dynamical Triangulations. In compliance with Jagiellonian University of Krak\'ow regulations, the document consists of six publications and a general summary, which serv
Externí odkaz:
http://arxiv.org/abs/2303.13120
Autor:
Brunekreef, Joren, Németh, Dániel
We perform a detailed investigation of the phase structure and the semiclassical effective action of (2+1)-dimensional Causal Dynamical Triangulations (CDT) quantum gravity using computer simulations. On the one hand, we study the effect of enlarging
Externí odkaz:
http://arxiv.org/abs/2208.13084
Autor:
Reitz, Marcus, Németh, Dániel, Rajbhandari, Damodar, Görlich, Andrzej, Gizbert-Studnicki, Jakub
Publikováno v:
Class. Quantum Grav. 40 (2023) 125003
The seemingly universal phenomenon of scale-dependent effective dimensions in non-perturbative theories of quantum gravity has been shown to be a potential source of quantum gravity phenomenology. The scale-dependent effective dimension from quantum
Externí odkaz:
http://arxiv.org/abs/2207.05117
Autor:
Ambjørn, Jan, Drogosz, Zbigniew, Gizbert-Studnicki, Jakub, Görlich, Andrzej, Jurkiewicz, Jerzy, Németh, Dániel
A typical geometry extracted from the path integral of a quantum theory of gravity might be quite complicated in the UV region. Even if such a configuration is not physical, it may be of interest to understand the details of its nature, since some un
Externí odkaz:
http://arxiv.org/abs/2105.10086
Autor:
Ambjørn, Jan, Czelusta, Grzegorz, Gizbert-Studnicki, Jakub, Görlich, Andrzej, Jurkiewicz, Jerzy, Németh, Dániel
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 spherica
Externí odkaz:
http://arxiv.org/abs/2002.01051
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 s
Externí odkaz:
http://arxiv.org/abs/1906.04557