Ahmed YOUSSEF

E-mail : ayoussef84gmail.com

CV: My CV.

Publications

• Ahmed Youssef, Dirk Kreimer, Resummation of infrared logarithms in de Sitter space via Dyson-Schwinger equations: The ladder-rainbow approximation, Physics Review D 89:124021, 2014 (arXiv preprint).
• Hervé Bergeron, Jean-Pierre Gazeau, Ahmed Youssef, Are the Weyl and coherent state descriptions physically equivalent?, Physics Letters A 377(8):598-605, 2013 (arXiv preprint).
• Matteo Smerlak, Ahmed Youssef, Self-organization without heat: the geometric ratchet effect, arXiv preprint, 2012.
• Ahmed Youssef, Do scale-invariant fluctuations imply the breaking of de Sitter invariance?, Physics Letters B 718(3):1095-1098, 2012 (arXiv preprint).
• Nathalie Deruelle, Misao Sasaki, Yuuiti Sendouda, Ahmed Youssef, Lorentz-violating vs ghost gravitons: the example of Weyl gravity, Journal of High Energy Physics 9, 2012 (arXiv preprint).
• Ahmed Youssef, Infrared Behavior and Gauge Artifacts in de Sitter Spacetime: The Photon Field, Physical Review Letters 107:021101, 2011 (arXiv preprint).
• Nathalie Deruelle, Misao Sasakib, Yuuiti Sendoudad, Ahmed Youssef, Inflation with a Weyl term, or ghosts at work, Journal of Cosmology and Astroparticle Physics, 3(40), 2011 (arXiv preprint).
• Hervé Bergeron, Jean-Pierre Gazeau, Petr Siegl, Ahmed Youssef, Semi-classical behavior of Pöschl-Teller coherent states, Europhysics Letters, 92(6), 2010 (arXiv preprint).
• Nathalie Deruelle, Yuuiti Sendouda, Ahmed Youssef, Various Hamiltonian formulations of f(R) gravity and their canonical relationships, Physical Review D, 80(8), 2009 (arXiv preprint).
• Biswajit Chakraborty, Jean Pierre Gazeau, Ahmed Youssef, Coherent state quantization of angle, time, and more irregular functions and distributions, arXiv preprint, 2008.

Research activities

• PhD thesis: Quantum Effects in Expanding Spacetimes, under the supervision of J.-P. Gazeau, defended on September 28th, 2011, at Université Paris Diderot - Paris 7.
• M.Sc. presentation of a bibliography on Quantum Field Theory in Curved Spacetime with Jean Iliopoulos (June 2007).
• Hamiltonian Formulation of General Relativity, bibliographical subject for the course by Nathalie Deruelle (May 2007, in French).
• Participation in the First Quantum Geometry and Quantum Gravity School in Zakopane (Poland) in 2007.
• Research training (first year of master) at DAMTP in Cambridge with Daniele Oriti :
  • my report: Hamiltonian and Fock space of the Group Field Theory, quantum gravitation (in French),
  • my slides presented on September 15th, 2006, in Cachan (in French).
• Presentation of my Bachelor's research training (supervised by Eugène Bogomolny) at ENS Cachan, June 2005 : Classical and Quantum Chaos, an Overview (in French).