Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Louapre, David"'
Autor:
Bartlett, Stuart, Louapre, David
We present a benchmark study of autonomous, chemical agents exhibiting associative learning of an environmental feature. Associative learning has been widely studied in cognitive science and artificial intelligence, but are most commonly implemented
Externí odkaz:
http://arxiv.org/abs/2210.05227
Autor:
Louapre, David
Cette thèse présente plusieurs résultats nouveaux pour les modèles de mousses de spin pour la gravité quantique en 3 dimensions. A partir des modèles de Ponzano-Regge et Turaev-Viro, nous montrons qu'il est possible de réaliser une fixation de
Externí odkaz:
http://tel.archives-ouvertes.fr/tel-00337352
http://tel.archives-ouvertes.fr/docs/00/33/73/52/PDF/These_Louapre_TEL_081106.pdf
http://tel.archives-ouvertes.fr/docs/00/33/73/52/PDF/These_Louapre_TEL_081106.pdf
Autor:
Freidel, Laurent, Louapre, David
We provide a mathematical definition of the gauge fixed Ponzano-Regge model showing that it gives a measure on the space of flat connections whose volume is well defined. We then show that the Ponzano-Regge model can be equivalently expressed as Resh
Externí odkaz:
http://arxiv.org/abs/gr-qc/0410141
Autor:
Freidel, Laurent, Louapre, David
Publikováno v:
Class.Quant.Grav. 21 (2004) 5685-5726
We show how to properly gauge fix all the symmetries of the Ponzano-Regge model for 3D quantum gravity. This amounts to do explicit finite computations for transition amplitudes. We give the construction of the transition amplitudes in the presence o
Externí odkaz:
http://arxiv.org/abs/hep-th/0401076
Autor:
Freidel, Laurent, Louapre, David
Publikováno v:
Nucl.Phys. B662 (2003) 279-298
We study the action of diffeomorphisms on spin foam models. We prove that in 3 dimensions, there is a residual action of the diffeomorphisms that explains the naive divergences of state sum models. We present the gauge fixing of this symmetry and sho
Externí odkaz:
http://arxiv.org/abs/gr-qc/0212001
Autor:
Freidel, Laurent, Louapre, David
Publikováno v:
Phys.Rev. D68 (2003) 104004
We construct a group field theory which realizes the sum of gravity amplitudes over all three dimensional topologies trough a perturbative expansion. We prove this theory to be uniquely Borel summable. This shows how to define a non-perturbative summ
Externí odkaz:
http://arxiv.org/abs/hep-th/0211026
Autor:
Freidel, Laurent, Louapre, David
Publikováno v:
Class.Quant.Grav.20:1267-1294,2003
It is well known that the building blocks for state sum models of quantum gravity are given by 6j and 10j symbols. In this work we study the asymptotics of these symbols by using their expressions as group integrals. We carefully describe the measure
Externí odkaz:
http://arxiv.org/abs/hep-th/0209134
Autor:
Louapre, David1, Breder, Kristin1
Publikováno v:
International Journal of Applied Ceramic Technology. Sep/Oct2015, Vol. 12 Issue 5, p1071-1079. 9p.
Autor:
Freidel, Laurent a, b, Louapre, David b, 1
Publikováno v:
In Nuclear Physics, Section B 2003 662(1):279-298
Autor:
Louapre, David
Publikováno v:
Physique mathématique [math-ph]. Ecole normale supérieure de lyon-ENS LYON, 2004. Français. ⟨NNT : ⟩
This work presents several new results concerning spin foam model for three-dimensional quantum gravity. Starting from Ponzano-Regge and Turaev-Viro models, we realize a gauge fixing of the diffeomorphism symmetry. Then we introduce point particles i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::ae9177f2204e460e0125e2cb21e5159a
https://theses.hal.science/tel-00337352
https://theses.hal.science/tel-00337352