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Abstracts have been posted for some of the Loops 2013 talks. In other cases a guess is offered as to the possible topic.
First, here are the talks for which abstracts are already posted:
Carlo Rovelli, Centre de Physique Théorique, overview What have we learned so far about quantum gravity?*
Aurelien Barrau, Universite Joseph Fourier, LQC observational consequences incl. adequate inflation*
Dafne Guetta, Braude College, LQG observational constraints Phenomenology with Neutrinos and high energy photons.*
Madhavan Varadarajan, Raman Research Institute, towards completing canonical LQG*
Abhay Ashtekar, Penn State, outlook. Promising paths for future research*.
*For the abstracts see menu at bottom of http://www.perimeterinstitute.ca/conferences/loops-13
And here are other listed speakers, with some guesses as to topic:
Ivan Agullo, DAMPT Cambridge, LQC bounce cosmology incl. pre-inflation.
Eugenio Bianchi, Perimeter Institute, LQG black hole thermodynamics
Steve Carlip, UC Davis, TBA
Fay Dowker, Imperial College London, causal sets
Henrique Gomes, UC Davis, shape dynamics
Razvan Gurau, Université Paris-Sud, tensor models
Frank Hellmann, MPI for Gravitational Physics Potsdam, holonomy spinfoams
Viqar Husain, University of New Brunswick, computable LQG framework
Kirill Krasnov, University of Nottingham, pure connection gravity
Etera Livine, Ens de Lyon, several possibilities including spinorial LQG
Alejandro Perez, Centre de Physique Theorique, several including loop BH thermodynamics
Vincent Rivasseau, Universite Paris-Sud Orsay, tensor models
David Skinner, DAMPT Cambridge+IAS, N=8 supergravity?
Bill Unruh, University of British Columbia, analog models of QG?Notes:
Krasnov recent pure connection formulation, http://arxiv.org/abs/1304.6946
Etera Livine recent spinorial LQG, http://arxiv.org/abs/1302.7142
Husain computable LQG framework,http://arxiv.org/abs/1305.5203
Varadarajan recent papers progress towards completing canonical LQG: e.g. http://arxiv.org/abs/1210.6877 http://pirsa.org/13040104/
The project of completing LQG Hamiltonian dynamics could also be called "closing the quantum constraint algebra". This corresponds classically to the hypersurface deformation algebra, which closes in GR. The snag which the Hamiltonian approach hit in the late 1990s seems essentially to have been that the quantum operator version of HD algebra did not close off shell. Dittrich and Bonzom have a paper about the HD algebra.
Alesci et al have also made recent progress towards completing LQG Hamiltonian dynamics. http://arxiv.org/abs/1306.0861
Reminders to myself:
cosmology/observational tests
black holes and thermodynamics
causal sets
shape dynamics
tensor models
holonomy spinfoams
spinorial LQG
spin nets (simpler analogs of spin foams using finite group instead of full SU(2) )
closing constraint algebra
Some things I don't see listed:
Marcolli Suijlekom (beautiful work on "gauge networks": graphs labeled with chunks of spectral geometry)
Freidel Hnybida (new basis for the intertwiners http://arxiv.org/abs/1305.3326)
Daniele Pranzetti (broad synthesis of ideas from Connes Rovelli Perez Bianchi Wieland and others. http://arxiv.org/abs/1305.6714 But I think his work may be covered in survey by Alejandro Perez with whom he has co-authored.)
Bianca Dittrich (http://arxiv.org/abs/1306.2987 "Coarse graining of spin net models: dynamics of intertwiners")
The intertwiners are the "atoms" of spatial geometry in both canonical LQG and Spinfoams.
Marcolli Suijlekom also has intertwiners at the nodes but based on spectral triples of NCG
The spin nets that Dittrich et al use are simplified (e.g. finite group) analogs of spin foams not meant to replace them but to facilitate progress understanding them. Dittrich is one of the conference organizers. I don't know what conference etiquette requires. The research on spin nets as "toy version" spinfoams seems potentially important and appropriate for plenary session. Maybe Dittrich can hand it off to one of her co-authors.
First, here are the talks for which abstracts are already posted:
Carlo Rovelli, Centre de Physique Théorique, overview What have we learned so far about quantum gravity?*
Aurelien Barrau, Universite Joseph Fourier, LQC observational consequences incl. adequate inflation*
Dafne Guetta, Braude College, LQG observational constraints Phenomenology with Neutrinos and high energy photons.*
Madhavan Varadarajan, Raman Research Institute, towards completing canonical LQG*
Abhay Ashtekar, Penn State, outlook. Promising paths for future research*.
*For the abstracts see menu at bottom of http://www.perimeterinstitute.ca/conferences/loops-13
And here are other listed speakers, with some guesses as to topic:
Ivan Agullo, DAMPT Cambridge, LQC bounce cosmology incl. pre-inflation.
Eugenio Bianchi, Perimeter Institute, LQG black hole thermodynamics
Steve Carlip, UC Davis, TBA
Fay Dowker, Imperial College London, causal sets
Henrique Gomes, UC Davis, shape dynamics
Razvan Gurau, Université Paris-Sud, tensor models
Frank Hellmann, MPI for Gravitational Physics Potsdam, holonomy spinfoams
Viqar Husain, University of New Brunswick, computable LQG framework
Kirill Krasnov, University of Nottingham, pure connection gravity
Etera Livine, Ens de Lyon, several possibilities including spinorial LQG
Alejandro Perez, Centre de Physique Theorique, several including loop BH thermodynamics
Vincent Rivasseau, Universite Paris-Sud Orsay, tensor models
David Skinner, DAMPT Cambridge+IAS, N=8 supergravity?
Bill Unruh, University of British Columbia, analog models of QG?Notes:
Krasnov recent pure connection formulation, http://arxiv.org/abs/1304.6946
Etera Livine recent spinorial LQG, http://arxiv.org/abs/1302.7142
Husain computable LQG framework,http://arxiv.org/abs/1305.5203
Varadarajan recent papers progress towards completing canonical LQG: e.g. http://arxiv.org/abs/1210.6877 http://pirsa.org/13040104/
The project of completing LQG Hamiltonian dynamics could also be called "closing the quantum constraint algebra". This corresponds classically to the hypersurface deformation algebra, which closes in GR. The snag which the Hamiltonian approach hit in the late 1990s seems essentially to have been that the quantum operator version of HD algebra did not close off shell. Dittrich and Bonzom have a paper about the HD algebra.
Alesci et al have also made recent progress towards completing LQG Hamiltonian dynamics. http://arxiv.org/abs/1306.0861
Reminders to myself:
cosmology/observational tests
black holes and thermodynamics
causal sets
shape dynamics
tensor models
holonomy spinfoams
spinorial LQG
spin nets (simpler analogs of spin foams using finite group instead of full SU(2) )
closing constraint algebra
Some things I don't see listed:
Marcolli Suijlekom (beautiful work on "gauge networks": graphs labeled with chunks of spectral geometry)
Freidel Hnybida (new basis for the intertwiners http://arxiv.org/abs/1305.3326)
Daniele Pranzetti (broad synthesis of ideas from Connes Rovelli Perez Bianchi Wieland and others. http://arxiv.org/abs/1305.6714 But I think his work may be covered in survey by Alejandro Perez with whom he has co-authored.)
Bianca Dittrich (http://arxiv.org/abs/1306.2987 "Coarse graining of spin net models: dynamics of intertwiners")
The intertwiners are the "atoms" of spatial geometry in both canonical LQG and Spinfoams.
Marcolli Suijlekom also has intertwiners at the nodes but based on spectral triples of NCG
The spin nets that Dittrich et al use are simplified (e.g. finite group) analogs of spin foams not meant to replace them but to facilitate progress understanding them. Dittrich is one of the conference organizers. I don't know what conference etiquette requires. The research on spin nets as "toy version" spinfoams seems potentially important and appropriate for plenary session. Maybe Dittrich can hand it off to one of her co-authors.
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