Photo Dr. Raphael Benichou
Post Doctoral Researcher

raphael.benichou@gmail.com
Phone: +32-2-6293463

Vrije Universiteit Brussel
Theoretical Physics (TENA)
Pleinlaan 2, B-1050 Brussels, BELGIUM

Welcome on my webpage. Below you will find some information about my research, a list of my scientific publications and a list of the talks I gave.

Brief CV

2009-Now: Post-doctoral researcher, Vrije Universiteit Brussel

2006-2009: PhD in Theoretical Physics (String Theory), Laboratoire de Physique Théorique de l'Ecole Normale Supérieure

2005-2006: Master Degree in Theoretical Physics, Ecole Normale Supérieure

2002-2005: Ecole Polytechnique

2000-2002: Classe Préparatoire PCSI & PC*, Lycée Louis-le-Grand

CV: English | Français


Research Interests

I am working on various aspects of string theory:

  • D-branes backreaction: Gravity in stringy braneworlds scenarios. Supergravity solutions for open strings.

  • AdS/CFT and Integrability: Line operators in quantum integrable sigma models. Perturbative derivation of the Hirota equation.

  • Sigma models on supergroups: Non-chiral current algebra. Perturbative computation of the spectrum.

  • Superstrings in curved non-compact spacetimes: Liouville theory and exact string backgrounds. Boundary states description of D-branes.


  • Publications

    Publications in international journals with peer-review:

  • The Fate of Newton's Law in Brane-World Scenarios.
    R. Benichou, J. Estes
    Dec 2011. 8 pp.
    Accepted for publication in Physics Letter B
    e-Print: arXiv:1202.0565 [hep-th]

  • Geometry of Open Strings Ending on Backreacting D3-Branes.
    R. Benichou, J. Estes
    Dec 2011. 64 pp.
    Published in JHEP 1203 (2012) 025
    e-Print: arXiv:1202.3035 [hep-th]

  • First-principles derivation of the AdS/CFT Y-systems.
    R. Benichou
    Aug 2011. 45 pp.
    Published in JHEP 1110 (2011) 112
    e-Print: arXiv:1108.4927 [hep-th]

  • Fusion of line operators in conformal sigma-models on supergroups, and the Hirota equation.
    R. Benichou
    Nov 2010. 53 pp.
    Published in JHEP 1101 (2011) 066
    e-Print: arXiv:1011.3158 [hep-th]

  • The influence of D-branes' backreaction upon gravitational interactions between open strings.
    R. Benichou
    Jun 2010. 28 pp.
    Published in JHEP 1010 (2010) 001
    e-Print: arXiv:1006.2824 [hep-th]

  • The Conformal Current Algebra on Supergroups with Applications to the Spectrum and Integrability.
    R. Benichou, J. Troost
    Feb 2010. 45 pp.
    Published in JHEP 1004 (2010) 121
    e-Print: arXiv:1002.3712 [hep-th]

  • Asymptotic Symmetries of String Theory on AdS(3) x S**3 with Ramond-Ramond Fluxes.
    Sujay K. Ashok, R. Benichou, J. Troost
    Jul 2009. 30 pp.
    Published in JHEP 0910 (2009) 051
    e-Print: arXiv:0907.1242 [hep-th]

  • Conformal Current Algebra in Two Dimensions.
    Sujay K. Ashok, R. Benichou, J. Troost
    Mar 2009. 33 pp.
    Published in JHEP 0906 (2009) 017
    e-Print: arXiv:0903.4277 [hep-th]

  • Bound states in N=2 Liouville theory with boundary and Deep throat D-branes.
    R. Benichou, J. Troost
    May 2008. 45 pp.
    Published in JHEP 0807 (2008) 125
    e-Print: arXiv:0805.4766 [hep-th]

  • T-duality in Ramond-Ramond backgrounds.
    R. Benichou, G. Policastro, J. Troost
    Jan 2008. 7 pp.
    Published in Phys.Lett. B661 (2008) 192-195
    e-Print: arXiv:0801.1785 [hep-th]

  • Non-compact Gepner Models, Landau-Ginzburg Orbifolds and Mirror Symmetry.
    Sujay K. Ashok, R.Benichou, J. Troost
    Oct 2007. 44 pp.  
    Published in JHEP 0801 (2008) 050
    e-Print: arXiv:0710.1990 [hep-th]


  • Proceedings:

  • The Hirota equation for string theory in AdS5xS5 from the fusion of line operators.
    R. Benichou
    Feb 2012. 6 pp.
    XVII European Workshop on String Theory 2011, Padova, Italy, 5-9 September 2011
    e-Print: arXiv:1202.0084 [hep-th]


  • PhD Thesis:

  • Supercordes, théories conformes et dualité holographique
    pdf


  • Seminars

  • Gravity on stringy braneworlds
    May 2nd, 2012
    Workshop on brane backreaction, fluxes and meta-stable vacua in string theory
    Uppsala University, Uppsala (Sweden)
    Slides

  • Quantum Integrability in 2D sigma-models on supergroups and supercosets
    April 25th, 2012
    Heriot Watt University, Edinburgh (Scotland)
    Slides

  • Open strings on backreacting D-branes
    February 17th, 2012
    IPhT, Saclay (France)
    Slides

  • The exact spectrum of planar N=4 SYM from quantum integrability
    February 2nd, 2012
    KIAS, Seoul (Korea)
    Slides

  • Open strings on backreacting D-branes
    February 1st, 2012
    CQuest, Seoul (Korea)
    Slides

  • Open strings on backreacting D-branes
    January 26th, 2012
    Seoul National University, Seoul (Korea)
    Slides

  • Open strings on backreacting D-branes
    January 25th, 2012
    KIAS, Seoul (Korea)
    Slides

  • First-principles derivation of the AdS/CFT Y-systems
    XVII European Workshop on String Theory 2011
    September 5th, 2011
    Padua (Italy)
    Slides

  • First-principles derivation of the AdS/CFT Y-systems
    Integrability in Gauge and String Theory 2011
    August 19th, 2011
    Perimeter Institute, Toronto (Canada)
    Video - Slides

  • Fusion of line operators and Quantum integrability in AdS/CFT
    March 30th, 2011
    KUL, Leuven (Belgium)
    Slides

  • Fusion of line operators and Quantum integrability in AdS/CFT
    March 28th, 2011
    LPTENS, Paris (France)
    Slides

  • Fusion of line operators and Quantum integrability in AdS/CFT
    March 2nd, 2011
    King's College, London (England)
    Slides

  • Fusion of line operators and Quantum integrability in Conformal sigma models on supergroups
    January 31st, 2011
    ENS, Lyon (France)
    Slides

  • Gravitational interactions in a stringy braneworld
    November 16th, 2010
    APC, Paris (France)
    Slides

  • Current algebra in conformal sigma models on supergroups
    May 12th & 14th, 2010
    Perimeter Institute, Toronto (Canada)
    Video part 1 Video part 2

  • Current algebra in conformal non-linear sigma models on supergroups
    January 25th, 2010
    LPTA, Montpellier (France)
    Slides

  • Lectures on two-dimensional conformal field theory and perturbative string theory
    5th Modave summer school in Mathematical Physics
    August 17th to 21st, 2009
    Modave (Belgium)
    Lecture notes

  • Conformal current algebra in two dimensions
    March 9th, 2009
    VUB, Brussels (Belgium)
    Slides

  • Bound states in non-compact CFT and D-branes in throats
    December 12th, 2008
    ULB, Brussels (Belgium)
    Slides

  • Bound states in non-compact CFT and D-branes in throats
    December 10th, 2008
    UvA, Amsterdam (Netherlands)
    Slides

  • Non-rational CFT and String bound states
    4th young researchers workshop of the European superstring theory network
    September 22nd, 2008
    Ayia Napa (Cyprus)
    Slides

  • Non-compact Gepner models
    March 5th, 2008
    ETH, Zurich (Switzerland)
    Slides