X-Nico

unusual facts about quantum gravity



Causal dynamical triangulation

Causal dynamical triangulation (abbreviated as CDT) invented by Renate Loll, Jan Ambjørn and Jerzy Jurkiewicz, and popularized by Fotini Markopoulou and Lee Smolin, is an approach to quantum gravity that like loop quantum gravity is background independent.

How many angels can dance on the head of a pin?

Anders Sandberg has presented a calculation based on theories of information physics and quantum gravity, establishing an upper bound of 8.6766×1049 angels.


see also

Arthur Komar

Later in 1957, he went to Syracuse University as a postdoc to research quantum gravity - collaborating with Peter Bergmann, and remained at Syracuse as assistant professor and associate professor, until 1963 when he left to join the Physics Department at Yeshiva University in New York City.

Causal structure

R.D. Sorkin, E. Woolgar; A Causal Order for Spacetimes with C^0 Lorentzian Metrics: Proof of Compactness of the Space of Causal Curves; Classical & Quantum Gravity 13: 1971-1994 (1996); arXiv:gr-qc/9508018 (Causal Structure)

History of loop quantum gravity

Rodolfo Gambini and Jorge Pullin, Loops, Knots, Gauge Theories and Quantum Gravity, Cambridge University Press (1996)

John W. Barrett

He is a quantum gravity researcher who is known for the Barrett-Crane model of quantum gravity.

Jorge Pullin

Pullin, Gambini, and Bernd Brügman also wrote a series of papers that make an important connection between knot theory and quantum gravity, by showing that the Jones polynomial can be used to solve a quantum form of Einstein's equations.

Parody science

The Sokal Affair, physicist Alan Sokal's hoax paper entitled, "Transgressing the Boundaries: Towards a Transformative Hermeneutics of Quantum Gravity" was published in the journal Social Text.