Julien Poisat


Maître de conférences / ~Assistant professor
Mathématiques / Mathematics
Section CNU : 26

Domaines/Fields:

Probability Theory, Statistical Mechanics

Intérêts/Interests:

Disordered systems, Disorder relevance, Polymers, Localization (Copolymers, Pinning, Trapping phenomena), Folding/Unfolding (Charged Polymers), Percolation (Polymer melts), Random Walks and Wiener sausages, Renewal theory, Potential theory and Capacity, Large Deviations.

Co-auteurs/Coauthors:

Q. Berger, F. Caravenna, D. Cheliotis, Y. Chino, D. Erhard, N. Guillotin-Plantard, F. den Hollander, J. Martínez, N. Pétrélis, R. Soares dos Santos, R. Sun, N. Zygouras.

Articles/Papers.

  1. D. Cheliotis, Y. Chino, J. Poisat.
    The random pinning model with correlated disorder given by a renewal set.
    Preprint 2017, [arxiv]. Submitted to Annales Henri Lebesgue.
  2. Q. Berger, F. den Hollander, J. Poisat.
    Annealed scaling for a charged polymer in dimensions two and higher
    Preprint 2017, [arxiv]. Accepted in Journal of Physics A: Mathematical and Theoretical (special issue in honour of Stuart Whittington’s 75th birthday).
  3. F. Caravenna, F. den Hollander, N. Pétrélis, J. Poisat.
    Annealed scaling for a charged polymer
    Math. Phys. Anal. Geom. Vol. 19 (1), 2016, [arxiv].
  4. D. Erhard, J. Poisat.
    Asymptotics of the critical time in Wiener sausage percolation with a small radius
    ALEA Lat. Am. J. Probab. Math. Stat. 13 (2016), no. 1, 417–445 [arxiv].
  5. Q. Berger, J. Poisat.
    On the critical curve of the pinning and copolymer models in correlated Gaussian environment
    Electronic Journal of Probability, Vol. 20, no. 71, 2015 [arxiv]
  6. D. Erhard, J. Martínez, J. Poisat
    Brownian Paths Homogeneously Distributed in Space: Percolation Phase Transition and Uniqueness of the Unbounded Cluster
    Journal of Theoretical Probability (2017) 30 :784-812. [arxiv]
  7. N. Guillotin-Plantard, J. Poisat, R. Soares dos Santos
    A Quenched Functional Central Limit Theorem for Planar Random Walks in Random Sceneries
    Electronic Communications in Probability, Vol. 19, 2014, [journal] [arxiv]
  8. F. den Hollander, J. Poisat.
    Large deviation principles for words drawn from correlated letter sequences
    Electronic Communications in Probability, Vol. 19, 2014 [arxiv][journal]
  9. Q. Berger, F. Caravenna, J. Poisat, R. Sun, N. Zygouras.
    The Critical Curve of the Random Pinning and Copolymer Models at Weak Coupling
    Communications in Mathematical Physics, 326, no. 2, 507-530. (2014) [arxiv]
  10. N. Guillotin-Plantard, J. Poisat.
    Quenched Central Limit Theorems for Random Walks in Random Scenery
    Stochastic Process. Appl. 123, no. 4, 1348-1367 (2013) [arxiv]
  11. J. Poisat.
    Ruelle-Perron-Frobenius operator approach to the annealed pinning model with Gaussian long-range correlated disorder.
    Markov Process. Related Fields 19 (2013), no. 3, 577–606. [arxiv]
  12. J. Poisat.
    Random pinning model with finite range correlations: disorder relevant regime.
    Stochastic Process. Appl. 122, no. 10, 3560-3579 (2012) [arxiv] [journal]
  13. J. Poisat.
    On quenched and annealed critical curves of random pinning model with finite range correlations.
    Ann. Inst. Henri Poincaré. Volume 49, Number 2 (2013) [arxiv]

Thèse de doctorat / PhD thesis

Modèle d'accrochage de polymères en environnement aléatoire faiblement corrélé.
Soutenue le / Defended on : 16/05/2012.
Directrice / Supervisor : Nadine Guillotin-Plantard (Institut Camille Jordan, Université Lyon 1).
[pdf]

Evénements / Events

  1. Rencontre ANR MALIN / Meeting of ANR MALIN,
    2018, 28/05-01/06, Aussois.
  2. Polymer, Folding and Phase Transition / Polymères, Repliement et Transition de Phase,
    2018, 3-6/04, CIRM, Luminy.
  3. Matinée du CEREMADE,
    2018, 16/01, Université Paris-Dauphine.
  4. Workshop on Random walks, folding transitions and related topics,
    2017, 11-13/09, Florence.