Journal Name: The European Physical Journal Plus

Publication Date: Jul 1, 2012

HAL - hal.archives-ouvertes.fr, CCSd - Centre pour la Communication Scientifique Direct. Accueil; Dépôt: S'authentifier; S'inscrire. Consultation: Par domaine; Les 30 derniers dépôts; Par année de publication, rédacti... more abstractHAL - hal.archives-ouvertes.fr, CCSd - Centre pour la Communication Scientifique Direct. Accueil; Dépôt: S'authentifier; S'inscrire. Consultation: Par domaine; Les 30 derniers dépôts; Par année de publication, rédaction, dépôt; Par type de publication; Par collection; Les portails de l'archive ouverte HAL; Par établissement (extraction automatique); ArXiv; Les Thèses (TEL).

Publication Date: 2008

Journal Name: Physics Procedia

Publication Date: Dec 31, 2010

Journal Name: arXiv preprint arXiv:1207.1026

Publication Date: Jul 4, 2012

The spin-foam approach to quantum gravity rests on a quantization of BF theory using 2-complexes and group representations. We explain why, in dimension three and higher, this spin-foam quantization must be amended to... more abstractThe spin-foam approach to quantum gravity rests on a quantization of BF theory using 2-complexes and group representations. We explain why, in dimension three and higher, this spin-foam quantization must be amended to be made consistent with the gauge symmetries of discrete BF theory. We discuss a suitable generalization, called ''cellular quantization,''which (1) is finite,(2) produces a topological invariant,(3) matches with the properties of the continuum BF theory, and (4) corresponds to its loop quantization.

Journal Name: Physical Review Letters

Publication Date: Jun 15, 2012

Abstract: In this thesis we study the flat model, the main buidling block for the spinfoam approach to quantum gravity, with an emphasis on its divergences. Besides a personal introduction to the problem of quantum gr... more abstractAbstract: In this thesis we study the flat model, the main buidling block for the spinfoam approach to quantum gravity, with an emphasis on its divergences. Besides a personal introduction to the problem of quantum gravity, the manuscript consists in two part. In the first one, we establish an exact powercounting formula for the bubble divergences of the flat model, using tools from discrete gauge theory and twisted cohomology.

Journal Name: arXiv preprint arXiv:1201.4874

Publication Date: Jan 23, 2012

An accelerated particle detector clicks even in the vacuum. This is not surprising per se: the detector receives energy from whichever device is accelerating it, and there is no reason why this energy should not be ex... more abstractAn accelerated particle detector clicks even in the vacuum. This is not surprising per se: the detector receives energy from whichever device is accelerating it, and there is no reason why this energy should not be exchanged with the field. What is surprising, however, is the thermal character of these transitions in the case of uniform acceleration discovered by Unruh [1]: thermal states are states of maximal entropy—where does the entropy of" acceleration radiation" come from?

Journal Name: Physical Review D

Publication Date: Jun 25, 2012

Publisher: APS

Publication Date: Jan 1, 2012

Publication Name: Physical Review E

Publisher: arxiv.org

Publication Date: Jan 1, 2011

Publication Name: Arxiv preprint arXiv:1112.0798

Publisher: arxiv.org

Publication Date: Jan 1, 2012

Publication Name: Arxiv preprint arXiv:1206.5539

Journal Name: The European Physical Journal Plus

Publication Date: Jul 1, 2012

HAL - hal.archives-ouvertes.fr, CCSd - Centre pour la Communication Scientifique Direct. Accueil; Dépôt: S'authentifier; S'inscrire. Consultation: Par domaine; Les 30 derniers dépôts; Par année de publication, rédacti... more abstractHAL - hal.archives-ouvertes.fr, CCSd - Centre pour la Communication Scientifique Direct. Accueil; Dépôt: S'authentifier; S'inscrire. Consultation: Par domaine; Les 30 derniers dépôts; Par année de publication, rédaction, dépôt; Par type de publication; Par collection; Les portails de l'archive ouverte HAL; Par établissement (extraction automatique); ArXiv; Les Thèses (TEL).

Publication Date: 2008

Journal Name: Physics Procedia

Publication Date: Dec 31, 2010

Journal Name: arXiv preprint arXiv:1207.1026

Publication Date: Jul 4, 2012

The spin-foam approach to quantum gravity rests on a quantization of BF theory using 2-complexes and group representations. We explain why, in dimension three and higher, this spin-foam quantization must be amended to... more abstractThe spin-foam approach to quantum gravity rests on a quantization of BF theory using 2-complexes and group representations. We explain why, in dimension three and higher, this spin-foam quantization must be amended to be made consistent with the gauge symmetries of discrete BF theory. We discuss a suitable generalization, called ''cellular quantization,''which (1) is finite,(2) produces a topological invariant,(3) matches with the properties of the continuum BF theory, and (4) corresponds to its loop quantization.

Journal Name: Physical Review Letters

Publication Date: Jun 15, 2012

Abstract: In this thesis we study the flat model, the main buidling block for the spinfoam approach to quantum gravity, with an emphasis on its divergences. Besides a personal introduction to the problem of quantum gr... more abstractAbstract: In this thesis we study the flat model, the main buidling block for the spinfoam approach to quantum gravity, with an emphasis on its divergences. Besides a personal introduction to the problem of quantum gravity, the manuscript consists in two part. In the first one, we establish an exact powercounting formula for the bubble divergences of the flat model, using tools from discrete gauge theory and twisted cohomology.

Journal Name: arXiv preprint arXiv:1201.4874

Publication Date: Jan 23, 2012

An accelerated particle detector clicks even in the vacuum. This is not surprising per se: the detector receives energy from whichever device is accelerating it, and there is no reason why this energy should not be ex... more abstractAn accelerated particle detector clicks even in the vacuum. This is not surprising per se: the detector receives energy from whichever device is accelerating it, and there is no reason why this energy should not be exchanged with the field. What is surprising, however, is the thermal character of these transitions in the case of uniform acceleration discovered by Unruh [1]: thermal states are states of maximal entropy—where does the entropy of" acceleration radiation" come from?

Journal Name: Physical Review D

Publication Date: Jun 25, 2012

Publisher: APS

Publication Date: Jan 1, 2012

Publication Name: Physical Review E

Publisher: arxiv.org

Publication Date: Jan 1, 2011

Publication Name: Arxiv preprint arXiv:1112.0798

Publisher: arxiv.org

Publication Date: Jan 1, 2012

Publication Name: Arxiv preprint arXiv:1206.5539