Points. Lack thereof
High Energy Physics - Theory
2019-05-09 v2 General Relativity and Quantum Cosmology
History and Philosophy of Physics
Abstract
I will discuss some aspects of the concept of "point" in quantum gravity, using mainly the tool of noncommutative geometry. I will argue that at Planck's distances the very concept of point may lose its meaning. I will then show how, using the spectral action and a high momenta expansion, the connections between points, as probed by boson propagators, vanish. This discussion follows closely [1] (Kurkov-Lizzi-Vassilevich Phys. Lett. B 731 (2014) 311, [arXiv:1312.2235 [hep-th]].
Keywords
Cite
@article{arxiv.1905.01653,
title = {Points. Lack thereof},
author = {Fedele Lizzi},
journal= {arXiv preprint arXiv:1905.01653},
year = {2019}
}
Comments
Proceedings of the XXII Krakow Methodological Conference: Emergence of the Classical, Copernicus Centre, 11-12 October 2018. Mostly based on arXiv:1312.2235. V2 corrects several typos