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(11) Production(s) de l'année 2017


Multiple D3instantons and mock modular forms II
Auteur(s): Alexandrov S., Banerjee S., Manschot Jan, Pioline Boris
(Document sans référence bibliographique) 20170215
Résumé: We analyze the modular properties of D3brane instanton corrections to the hypermultiplet moduli
space in type IIB string theory compactified on a CalabiYau threefold.
In Part I, we found a necessary condition for the existence of an isometric action of Sduality on
this moduli space: the generating function of DT invariants in the large volume attractor chamber
must be a vectorvalued mock modular form. In this work, we prove that this condition is also sufficient at twoinstanton order.
This is achieved by producing a holomorphic action of $SL(2,\IZ)$
on the twistor space which preserves the holomorphic contact structure.
The key step is to cancel the anomalous modular variation of the Darboux coordinates
by a local complex contact transformation, which is generated by a suitable indefinite theta series. For this purpose we introduce
a new family of theta series of signature $(2,n2)$ and their modular completions,
which may be of independent mathematical interest, and conjecture sufficient conditions for their convergence.




Bursting mechanism of dilute emulsionbased liquid sheets: antidrift application for agricultural sprays
Auteur(s): Ligoure C.
Conférence invité: CROPS AND CHEMICALS EUROPE (BERLIN, DE, 20170208)



Stem cells as anticancer drug delivery to reduce the chemotherapy side effect
Auteur(s): Salehi Hamideh, AlArag Siham, Middendrop Elodie, Gergely C., Cuisinier Frédéric
Conference: SPIE Photonics west 2017 (San Francisco, US, 2017)



Many body heat radiation and heat transfer in the presence of a nonabsorbing background medium
Auteur(s): Boris Muller, Roberta Incardone, Antezza M., Thorsten Emig, Matthias Kruger
(Article) Publié:
Physical Review B, vol. 95 p.085413 (2017)
Ref HAL: hal01464078_v1
DOI: 10.1103/PhysRevB.95.085413
Exporter : BibTex  endNote
Résumé: Heat radiation and nearfield radiative heat transfer can be strongly manipulated by adjusting geometrical shapes, optical properties, or the relative positions of the objects involved. Typically, these objects are considered as embedded in vacuum. By applying the methods of fluctuational electrodynamics, we derive general closedform expressions for heat radiation and heat transfer in a system of N arbitrary objects embedded in a passive nonabsorbing background medium. Taking into account the principle of reciprocity, we explicitly prove the symmetry and positivity of transfer in any such system. Regarding applications, we find that the heat radiation of a sphere as well as the heat transfer between two parallel plates is strongly enhanced by the presence of a background medium. Regarding near and farfield transfer through a gas like air, we show that a microscopic model (based on gas particles) and a macroscopic model (using a dielectric contrast) yield identical results. We also compare the radiative transfer through a medium like air and the energy transfer found from kinetic gas theory.



Ising spin glasses in dimension five
Auteur(s): Campbell I., Lundow Per
(Article) Publié:
Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 95 p.012112 (2017)
Ref HAL: hal01463346_v1
DOI: 10.1103/PhysRevE.95.012112
Exporter : BibTex  endNote
Résumé: Ising spinglass models with bimodal, Gaussian, uniform, and Laplacian interaction distributions in dimension
five are studied through detailed numerical simulations. The data are analyzed in both the finitesize scaling
regime and the thermodynamic limit regime. It is shown that the values of critical exponents and of dimensionless
observables at criticality are model dependent.Models in a single universality class have identical values for each
of these critical parameters, so Ising spinglass models in dimension five with different interaction distributions
each lie in different universality classes. This result confirms conclusions drawn frommeasurements in dimension
four and dimension two.



Locally favoured structures and dynamic length scales in a simple glassformer
Auteur(s): Royall Christopher patrick, Kob W.
(Article) Publié:
Journal Of Statistical Mechanics: Theory And Experiment, vol. p.JSTAT/2017/024001 (2017)



Excitation injector in an atomic chain: longranged transport and efficiency amplification
Auteur(s): Doyeux P., Messina R., Leggio B., Antezza M.
(Article) Publié:
Physical Review A: Atomic, Molecular And Optical Physics, vol. p.012138 (2017)
Ref HAL: hal01448442_v1
DOI: 10.1103/PhysRevA.95.012138
Exporter : BibTex  endNote
Résumé: We investigate the transport of energy in a linear chain of twolevel quantum emitters (atoms) weakly coupled to a blackbody radiation bath. We show that simply by displacing one or more atoms from their regularchain positions, the efficiency of the energy transport can be considerably amplified of at least one order of magnitude. In addition, in configurations providing an efficiency greater than 100%, the distance between the last two atoms of the chain can be up to 20 times larger than the one in the regular chain, thus achieving a much longerrange energy transport. By performing both a stationary and timedependent analysis, we ascribe this effect to an elementary block of three atoms, playing the role of excitation injector from the blackbody bath to the extraction site. By considering chains with up to seven atoms, we also show that the amplification is robust and can be further enhanced up to 1400%.
