Zobrazeno 1 - 10
of 359
pro vyhledávání: '"Oriti, Daniele"'
Autor:
Langenscheidt, Simon, Oriti, Daniele
We present a set of noncommuting frame-translation symmetries in 4D gravity in tetrad-connection variables, which allow expressing diffeomorphisms as composite transformations. Working on the phase space level for finite regions, we pay close attenti
Externí odkaz:
http://arxiv.org/abs/2408.01809
We study extensions of the mappings arising in usual channel-state duality to the case of Hilbert spaces with a direct sum structure. This setting arises in representations of algebras with centers, which are commonly associated with constraints, and
Externí odkaz:
http://arxiv.org/abs/2404.16004
Autor:
Lam, Vincent, Oriti, Daniele
We discuss the challenges that the standard (Humean and non-Humean) accounts of laws face within the framework of quantum gravity where space and time may not be fundamental. This paper identifies core (meta)physical features that cut across a number
Externí odkaz:
http://arxiv.org/abs/2404.12248
Autor:
Margoni, Emilia, Oriti, Daniele
Among the various attempts to formulate a theory of quantum gravity, a class of approaches suggests that spacetime, as modeled by general relativity, is destined to fade away. A major issue becomes then to identify which structures may inhabit the mo
Externí odkaz:
http://arxiv.org/abs/2404.11386
Publikováno v:
J. High Energ. Phys. (JHEP) 2024, 50 (2024)
We continue the series of articles on the application of Landau-Ginzburg mean-field theory to unveil the basic phase structure of tensorial field theories which are characterized by combinatorially non-local interactions. Among others, this class cov
Externí odkaz:
http://arxiv.org/abs/2404.04524
Autor:
Oriti, Daniele
We outline the content and theoretical support for the proposal of "hydrodynamics on (mini)superspace" (or a non-linear extension of quantum cosmology) as an effective framework for quantum gravity in a cosmological context. The basis for the proposa
Externí odkaz:
http://arxiv.org/abs/2403.10741
Autor:
Oriti, Daniele, Wang, Yi-Li
We study the emergent dynamics of an anisotropic universe in the context of Group Field Theory condensate cosmology, with a scalar field playing the role of a relational clock. According to different definitions of ``isotropy'', two anisotropic conde
Externí odkaz:
http://arxiv.org/abs/2311.14377
We adopt a top-down approach to agency aimed at developing a minimalist, scalable and naturalized account of it. After providing a general definition, we explore some possible extensions and refinements, domain of applicability, as well as a comparis
Externí odkaz:
http://arxiv.org/abs/2307.16054
Publikováno v:
Phys. Rev. D 109, 066008 (2024)
A generalised Amit-Roginsky vector model in flat space is obtained as the effective dynamics of pertubations around a classical solution of the Boulatov group field theory for 3d euclidean quantum gravity, extended to include additional matter degree
Externí odkaz:
http://arxiv.org/abs/2307.14211
Autor:
Oriti, Daniele, Wang, Yi-Li
Publikováno v:
Class.Quant.Grav. 40 (2023) 21, 215011
Candidate microstates of a spherically symmetric geometry are constructed in the group field theory formalism for quantum gravity, for models including both quantum geometric and scalar matter degrees of freedom. The latter are used as a material ref
Externí odkaz:
http://arxiv.org/abs/2305.18902