380 research outputs found
Canonical quantum gravity with new variables and loops: a report
This is a brief and updated summary of a talk given at the International
Conference on Gravitation and Cosmology that took place in Poona in December
1995. It is very brief and is mostly intended as a guide to current literature,
or to keep people updated only in very broad terms on the latest developments
in the subject.Comment: 7 pages, RevTeX, 3 figures included with psfi
Knot theory and quantum gravity in loop space: a primer
These notes summarize the lectures delivered in the V Mexican School of
Particle Physics, at the University of Guanajuato. We give a survey of the
application of Ashtekar's variables to the quantization of General Relativity
in four dimensions with special emphasis on the application of techniques of
analytic knot theory to the loop representation. We discuss the role that the
Jones Polynomial plays as a generator of nondegenerate quantum states of the
gravitational field.Comment: 44 pages. v2: figures added, also available as PDF at
http://www.phys.psu.edu/~pullin/primerfigs.pd
The ADM papers and part of their modern legacy: loop quantum gravity
We present a summary for non-specialists of loop quantum gravity as part of
the modern legacy of the series of papers by Arnowitt, Deser and Misner circa
1960.Comment: 7 pages, prepared for Classical and Quantum Gravity for its
"Milestones of General Relativity" focus issue to be published during the
Centenary Year of G
Matters of Gravity, the newsletter of the APS Topical Group on Gravitation
News:
TGG session in the April meeting, by Cliff Will NRC report, by Beverly Berger
MG9 Travel Grant for US researchers, by Jim Isenberg Research Briefs:
How many coalescing binaries are there?, by Vicky Kalogera Recent
developments in black critical phenomena, by Pat Brady Optical black holes?, by
Matt Visser ``Branification:'' an alternative to compactification, by Steve
Giddings Searches for non-Newtonian Gravity at Sub-mm Distances, by Riley
Newman Quiescent cosmological singularities by Bernd Schmidt The debut of LIGO
II, by David Shoemaker Is the universe still accelerating?, by Sean Carroll
Conference reports:
Journ\' ees Relativistes Weimar 1999, by Volker Perlick The 9th Midwest
Relativity Meeting, by Thomas BaumgarteComment: 35 pages, LaTeX with psfig and html.sty, ISSN 1527-3431, Jorge Pullin
(editor), html, ps and pdf versions at http://gravity.phys.psu.edu/mog.htm
An overview of canonical quantum gravity
This is a summary of a talk delivered at the workshop ``Quantum gravity in
the Southern Cone II''. We present a very brief review of current results on
canonical quantization of general relativity using Ashtekar's variables and
loop quantization.Comment: 6 pages, RevTeX, no figure
Canonical quantization of general relativity: the last 18 years in a nutshell
This is a summary of the lectures presented at the Xth Brazilian school on
cosmology and gravitation. The style of the text is that of a lightly written
descriptive summary of ideas with almost no formulas, with pointers to the
literature. We hope this style can encourage new people to take a look into
these results. We discuss the variables that Ashtekar introduced 18 years ago
that gave rise to new momentum in this field, the loop representation, spin
networks, measures in the space of connections modulo gauge transformations,
the Hamiltonian constraint, application to cosmology and the connection with
potentially observable effects in gamma-ray bursts and conclude with a
discussion of consistent discretizations of general relativity on the lattice.Comment: 13 pages, RevTeX, one figures, to appear in Proceedings of the Xth
Brazilian School on Cosmology and Gravitation, Mario Novello, edito
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