Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Tim Koslowski"'
Publikováno v:
Universe, Vol 5, Iss 2, p 53 (2019)
A background-independent route towards a universal continuum limit in discrete models of quantum gravity proceeds through a background-independent form of coarse graining. This review provides a pedagogical introduction to the conceptual ideas underl
Externí odkaz:
https://doaj.org/article/c30765264cf84a608f8e8ab0a3ce303e
Autor:
Hanno Sahlmann, Tim Koslowski
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 8, p 026 (2012)
In loop quantum gravity, states of the gravitational field turn out to be excitations over a vacuum state that is sharply peaked on a degenerate spatial geometry. While this vacuum is singled out as fundamental due to its invariance properties, it is
Externí odkaz:
https://doaj.org/article/fc1d6cddf0e7404ca471a8b46cbf7762
We present a new metaphysical framework for physics that is conceptually clear, ontologically parsimonious, and empirically adequate. This framework relies on the notion of self-subsisting structure, that is, a set of fundamental physical elements wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eab23f7259e5d20e701e9b1cf6de2de4
http://arxiv.org/abs/2209.01456
http://arxiv.org/abs/2209.01456
Publikováno v:
The Foundations of Spacetime Physics ISBN: 9781003219019
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2370c43e56ee609d08df4b164f055018
https://doi.org/10.4324/9781003219019-6
https://doi.org/10.4324/9781003219019-6
Autor:
Tim Koslowski, Alicia Castro
Publikováno v:
Frontiers in Physics, 9, pp. 1-11
Frontiers in Physics, Vol 9 (2021)
Frontiers in Physics, 9, 1-11
Frontiers in Physics, Vol 9 (2021)
Frontiers in Physics, 9, 1-11
This contribution is not intended as a review but, by suggestion of the editors, as a glimpse ahead into the realm of dually weighted tensor models for quantum gravity. This class of models allows one to consider a wider class of quantum gravity mode
Publikováno v:
Classical and Quantum Gravity. 39:215017
We put forward a general framework for describing relational physical theories, which we call Pure Shape Dynamics (PSD). Elaborating on the original insights brought about by the Shape Dynamics program, PSD's novel take on relationalism is its insist
Autor:
Astrid Eichhorn, Tim Koslowski
Publikováno v:
Annales de l’Institut Henri Poincaré D. 5:173-210
Tensor models provide a way to access the path-integral for discretized quantum gravity in d dimensions. As in the case of matrix models for two-dimensional quantum gravity, the continuum limit can be related to a Renormalization Group fixed point in
Autor:
Tim Koslowski
Publikováno v:
Foundations of Physics. 47:625-639
I consider a quantum system that possesses key features of quantum shape dynamics and show that the evolution of wave-packets will become increasingly classical at late times and tend to evolve more and more like an expanding classical system. At ear
Publikováno v:
Physical Review
Phys.Rev.D
Phys.Rev.D, 2018, 97 (12), pp.126018. ⟨10.1103/PhysRevD.97.126018⟩
Physical Review D
Physical Review D, American Physical Society, 2018, 97 (12), pp.126018. ⟨10.1103/PhysRevD.97.126018⟩
Phys.Rev.D
Phys.Rev.D, 2018, 97 (12), pp.126018. ⟨10.1103/PhysRevD.97.126018⟩
Physical Review D
Physical Review D, American Physical Society, 2018, 97 (12), pp.126018. ⟨10.1103/PhysRevD.97.126018⟩
In this paper we consider the complete momentum-independent quartic order truncation for the effective average action of a real Abelian rank 3 tensorial group field theory. This complete truncation includes non-melonic as well as double-trace interac
Publikováno v:
Physics Letters
Physics Letters B, Vol 778, Iss C, Pp 339-343 (2018)
Physics Letters B, Vol 778, Iss C, Pp 339-343 (2018)
All measurements are comparisons. The only physically accessible degrees of freedom (DOFs) are dimensionless ratios. The objective description of the universe as a whole thus predicts only how these ratios change collectively as one of them is change