Ervin Goldfain. Objections to Quantum Gravity Theories Based on Causal Dynamical Triangulation


Natural Sciences / Physics / Quantum field theory

Submitted on: Feb 26, 2012, 17:47:58

Description: This memo is in regards to the recently published contribution by Ambjorn J. et al. "Planckian Birth of Quantum de Sitter Universe" PRL 100, 091304 (2008). The article claims that "causal dynamical triangulation" enables a consistent regularization of quantum gravity. A "quantum universe" emerging from a nonperturbative sum over geometries is alleged to recover "with high accuracy a fourdimensional de Sitter space-time". On closer examination, the approach is built on many objectionable premises

The Library of Congress (USA) reference page : http://lccn.loc.gov/cn2013300046.

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Objections to Quantum Gravity Theories Based on Causal Dynamical Triangulation.pdf



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