Results 1 to 10 of about 20,737 (75)

Quantization of Midisuperspace Models [PDF]

, 2010
We give a comprehensive review of the quantization of midisuperspace models. Though the main focus of the paper is on quantum aspects, we also provide an introduction to several classical points related to the definition of these models.
A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Ashtekar, A Corichi, A Corichi, A Corichi, A Corichi, A Corichi, A Corichi, A Einstein, A Franzen, A Peltola, A Peltola, AD Helfer, AE Fischer, AS Lapedes, BG Schmidt, BK Berger, BK Berger, BK Berger, BK Berger, BK Berger, BS DeWitt, BS DeWitt, BS DeWitt, C Bartolo Di, C Bartolo Di, C Beetle, C Charach, C Charach, C Charach, C Fleischhack, C Kiefer, C Kiefer, C Kiefer, C Kiefer, C Vaz, C Vaz, C Vaz, C Vaz, C Vaz, C Vaz, C Vaz, C Vaz, C Vaz, CG Böhmer, CG Callan Jr, CG Torre, CG Torre, CG Torre, CG Torre, CG Torre, CG Torre, CG Torre, CG Torre, CJS Clarke, CW Misner, CW Misner, CW Misner, D Brizuela, D Chiou, D Giulini, D Gómez Vergel, D Gómez Vergel, D Kennefick, D Korotkin, D Korotkin, D Korotkin, D Korotkin, D Maison, D Shale, DE Neville, DE Neville, DE Neville, DHJ Cho, F Lund, G Beck, G Bonacina, GA Mena Marugán, GA Mena Marugán, GA Mena Marugán, GA Mena Marugán, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, GJF Barbero, H Osborn, H Stephani, HA Kastrup, HA Kastrup, HW Braden, I Bengtsson, I Kouletsis, IM Singer, J Bekenstein, J Cortez, J Cortez, J Cortez, J Cortez, J Cruz, J Engle, J Gegenberg, J Isenberg, J Lewandowski, J Louko, J Louko, J Louko, J Louko, J Louko, J Mäkelä, J Samuel, J Szenthe, JD Brown, JD Romano, JL Friedman, JW York Jr, K Banerjee, K Banerjee, KV Kuchař, KV Kuchař, KV Kuchař, KV Kuchař, L Modesto, L Modesto, L Modesto, L Modesto, L Modesto, L Modesto, M Bojowald, M Bojowald, M Bojowald, M Bojowald, M Bojowald, M Bojowald, M Campiglia, M Campiglia, M Carmeli, M Carmeli, M Cavaglià, M Cavaglià, M Henneaux, M Martín-Benito, M McGuigan, M Pierri, M Varadarajan, M Varadarajan, M Varadarajan, M Varadarajan, ME Angulo, ME Fels, MJ Gotay, MP Ryan Jr, N Manojlovioć, NMJ Woodhouse, P Hájíček, P Hájíček, P Hájíček, P Hájíček, P Hájíček, P Hájíček, P Hájíček, P Hájíček, PK Mitter, PS Mostert, PS Mostert, PT Chruściel, R Borissov, R Gambini, R Gambini, R Gambini, R Gambini, R Siegl, RH Gowdy, RH Gowdy, RM Wald, RM Wald, RP Geroch, RP Geroch, RS Palais, RT Jantzen, S Bose, S Chandrasekhar, S Holst, T Jacobson, T Regge, T Thiemann, V Husain, V Husain, V Husain, V Husain, V Husain, V Husain, V Husain, V Husain, V Husain, V Husain, V Husain, V Moncrief, VA Berezin, VF Mukhanov, WG Unruh   +216 more
core   +5 more sources

What is General Relativity? [PDF]

, 2017
General relativity is a set of physical and geometric principles, which lead to a set of (Einstein) field equations that determine the gravitational field, and to the geodesic equations that describe light propagation and the motion of particles on the ...
Coley, Alan A., Wiltshire, David L.
core   +2 more sources

Introduction to Loop Quantum Cosmology [PDF]

, 2012
This is an introduction to loop quantum cosmology (LQC) reviewing mini- and midisuperspace models as well as homogeneous and inhomogeneous effective ...
Banerjee, Kinjal, Calcagni, Gianluca, Martín-Benito, Mercedes   +2 more
core   +5 more sources

Towards a background independent approach to M theory [PDF]

, 1998
Work in progress is described which aims to construct a background independent formulation of M theory by extending results about background independent states and observables from quantum general relativity and supergravity to string theory.
Amati, Armand-Ugon, Ashtekar, Ashtekar, Ashtekar, Ashtekar, Ashtekar, Ashtekar, Ashtekar, Aspinwall, Aspinwall, Atick, Bak, Banados, Banks, Bekenstein, Borissov, Borissov, Connes, Connes, Crane, Crane, Crane, DePietri, Dijkgraaf, Douglas, Duff, Duff, Duff, Ezawa, Finkelstein, Finkelstein, Finkelstein, Finkelstein, Garay, Greene, Greene, Gross, Gross, Gubser, Guida, Hull, Hull, Iwasaki, Jacobson, Jaocobson, Kadoyoshi, Kato, Klebanov, Kodama, Konishi, Kunitomo, Landi, Landi, Lee Smolin, Loll, Loll, Major, Markopoulou, Markopoulou, Markopoulou, Markopoulou, Penrose, Penrose, Penrose, Rayner, Rayner, Reisenberger, Rovelli, Rovelli, Rovelli, Rovelli, Rovelli, Rovelli, Sano, Smolin, Smolin, Smolin, Smolin, Smolin, Smolin, Smolin, Strominger, Susskind, Susskind, Susskind, Susskind, Thorne, Townsend, Townsend, Veneziano, Waelbroeck, Waelbroeck, Witten   +93 more
core   +3 more sources

Heun Functions and Some of Their Applications in Physics

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
Most of the theoretical physics known today is described by using a small number of differential equations. For linear systems, different forms of the hypergeometric or the confluent hypergeometric equations often suffice to describe the system studied.
M. Hortaçsu, Saber Zarrinkamar
wiley   +1 more source

Optimized Reputable Sensing Participants Extraction for Participatory Sensor Networks

Mathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014
By collecting data via sensors embedded personal smart devices, sensing participants play a key role in participatory sensor networks. Using information provided by reputable sensing participants ensures the reliability of participatory sensing data.
Weiwei Yuan, Donghai Guan, Yuanfeng Jin, Lu Zhen   +3 more
wiley   +1 more source

From Physics Model to Results: An Optimizing Framework for Cross‐Architecture Code Generation

Scientific Programming, Volume 21, Issue 1-2, Page 1-16, 2013., 2013
Starting from a high‐level problem description in terms of partial differential equations using abstract tensor notation, the Chemora framework discretizes, optimizes, and generates complete high performance codes for a wide range of compute architectures. Chemora extends the capabilities of Cactus, facilitating the usage of large‐scale CPU/GPU systems
Marek Blazewicz, Ian Hinder, David M. Koppelman, Steven R. Brandt, Milosz Ciznicki, Michal Kierzynka, Frank Löffler, Erik Schnetter, Jian Tao   +8 more
wiley   +1 more source

(Loop) quantum gravity and the inflationary scenario [PDF]

, 2015
Quantum gravity, as a fundamental theory of space-time, is expected to reveal how the universe may have started, perhaps during or before an inflationary epoch.
Bojowald, Martin
core   +2 more sources

The Geometry of Black Hole singularities [PDF]

, 2014
Recent results show that important singularities in General Relativity can be naturally described in terms of finite and invariant canonical geometric objects. Consequently, one can write field equations which are equivalent to Einstein's at non-singular
Stoica, Ovidiu Cristinel
core   +3 more sources

Simple quantum cosmology: Vacuum energy and initial state

, 2005
A static non-singular 10-dimensional closed Friedmann universe of Planck size, filled with a perfect fluid with an equation of state with w = -2/3, can arise spontaneously by a quantum fluctuation from nothing in 11-dimensional spacetime.
D. Spergel, D. Youm, E. Elbaz, M. Novello, M. Tegmark, S. Alexander, S. Eidelman, T. R. Mongan, T.R. Mongan   +8 more
core   +2 more sources