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Production scientifique
Théorie des Champs & Physique Mathématique
(11) Production(s) de l'année 2018
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Strong light-matter coupling in a quantum metasurface
Auteur(s): Felbacq D., Rousseau E.
Conference: SPIE Nanoscience + Engineering (San Diego, US, 2018)
Actes de conférence: Proceedings of SPIE, vol. 10721 p.1072128 (2018)
Texte intégral en Openaccess :
Ref HAL: hal-02019418_v1
DOI: 10.1117/12.2320277
WoS: WOS:000451765300010
Exporter : BibTex | endNote
Résumé: Metasurfaces have been used for light manipulation and control, from the point of view of planar optics or polarization control, or non-linear light extraction. The properties of metasurfaces is rooted in the presence of resonant basic elements which are responsible for strongly confined electromagnetic surface modes. We propose to use these modes to enhance light-matter interaction in the vicinity of the surface by considering hybrid structure made of a thin layer, such as a 2D quantum material or a thin film with embedded quantum dots. A semi-classical theory will be proposed along with some functionalities attainable with the device.
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InAs/InP quantum dot-nanowire single photon sources in the telecom band grown monolithically on silicon substrates
Auteur(s): Jaffal Ali, Redjem W., Regreny Philippe, Nguyen Hai-Son, Cueff Sébastien, Letartre Xavier, Patriarche Gilles, Rousseau E., Cassabois G., Gendry Michel, Chauvin Nicolas
Conference: C'Nano (Toulon, FR, 2018-12-11)
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The dawn of Supersymmetry
Auteur(s): Neveu A.
Conférence invité: 50 years of the Veneziano model: from dual models and strings, M-theory and beyond (Florence, IT, 2018-05-11)
Ref HAL: hal-01938198_v1
Exporter : BibTex | endNote
Résumé: How the Neveu-Schwarz string was discovered is the result of a most unlikely sequence of four coincidences.
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A Backlund Transformation for Elliptic Four-Point Conformal Blocks
Auteur(s): Neveu A.
(Article) Publié:
Reviews In Mathematical Physics, vol. 30 p.1840012 (2018)
Texte intégral en Openaccess :
Ref HAL: hal-01924596_v1
DOI: 10.1142/S0129055X18400123
WoS: WOS:000439964100006
Exporter : BibTex | endNote
Résumé: We apply an integral transformation to solutions of a partial differential equa-tion for the five-point correlation functions in Liouville theory on a sphere withone degenerate field $V_{ − 1/(2b)}$ . By repeating this transformation, we can reach a whole lattice of values for the conformal dimensions of the four other operators. Factorizing out the degenerate field leads to integral representations of the corresponding four-point conformal blocks. We illustrate this procedure on the elliptic conformal blocks discovered in a previous publication.
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Dualities, DT invariants and higher depth mock modular forms
Auteur(s): Alexandrov S.
(Séminaires)
Mathematical Institute of University of Cologne (Cologne, DE), 2018-07-24
Résumé: Using dualities of string theory, I derive modular constraints onthe generating function of MSW invariants, which coincide withgeneralized Donaldson-Thomas invariants of a Calabi-Yau threefoldat the large volume attractor point in the moduli space. Thefunction is labeled by a divisor and when the divisor isirreducible, it is known to be modular. I show that in the case ofa reducible divisor, the modularity is lost, but can be restored
in a non-holomorphic completion. I find a general form of thecompletion for arbitrary degree of reducibility and provide its explicit expression up to degree 5.
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Dualities, DT invariants and higher depth mock modular forms
Auteur(s): Alexandrov S.
(Séminaires)
Max Planck Institute (Bonn, DE), 2018-07-23
Résumé: Using dualities of string theory, I derive modular constraints onthe generating function of MSW invariants, which coincide withgeneralized Donaldson-Thomas invariants of a Calabi-Yau threefoldat the large volume attractor point in the moduli space. Thefunction is labeled by a divisor and when the divisor isirreducible, it is known to be modular. I show that in the case ofa reducible divisor, the modularity is lost, but can be restored
in a non-holomorphic completion. I find a general form of thecompletion for arbitrary degree of reducibility and provide its explicit expression up to degree 5.
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BPS black holes, wall-crossing and mock modularity of higher depth
Auteur(s): Alexandrov S.
Conférence invité: Moonshine (Vienne, AT, 2018-09-10)
Ref HAL: hal-01875307_v1
Exporter : BibTex | endNote
Résumé: A class of BPS solutions in N=2 supergravity describes multi-centered black holes. Generically, they are stable only in a chamber of the moduli space so that the BPS index, counting these solutions, jumps across walls of marginal stability. I'll show how the attractor flow conjecture allows to express this index in terms of "attractor degeneracies" counting black holes at theattractor point. Besides, using duality constraints from string theory, I predict the behavior of the generating function of these degeneracies under modular transformations, which connects it to the theory of mock modular forms.
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