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I am member of CNRS and the Laboratoire de Physique Théorique in the Departement de Physique of the Ecole Normale Supérieure. 

Research Interests

My research interests are in theoretical condensed matter physics and in statistical physics. In particular, I study the physics of strong fluctuations in many-body systems, which may be due to frustration, competing degrees of freedom or quantum fluctuations.

For instance, I am interested in magnets with competing interactions (classical spin liquids, quantum and itinerant frustration); magnetoelastic effects in the pyrochlores and spinels; high-temperature superconductivity (RVB theory and gauge theories). I am also active in the field of quantum Hall physics, where I have worked on electron interactions in graphene as well as on electrons in high Landau levels (quantum Hall stripes). I have also done some work on nanophysics, namely a study of the thermodynamics and the dynamics of a lithographically produced dipolar array.



A list of my publications is available from the preprint arxives. 

Recent talks

On quantum frustration at an ITP workshop at UCSB in 2003.
A more recent talk at ITP, on RVB liquids, is also available online at ITP (2004).
On Cantor deconfinement at  a Heraeus-Seminar on quantum phase transitions (2004).
A talk on pyrochlore magnets (Grenoble, 2005) can be found here.
A seminar on frustrated magnetoelastics (Saclay, 2005).
Why spin ice obeys the ice rules (Leiden, 2005).
On effective Hamiltonians in frustrated systems (Peyresq, 2005).
Interacting electrons in graphene (INSTANS workshop, Como, 2006).
Fermionic magneto-supersolid (ISIS/IOP Magnetism Meeting, Abingdon, 2006).


Course on condensed matter theory for the Ecole Doctorale of the Paris region (2004/05).
Course on quantum Hall physics for the Ecole Doctorale of the Paris region (2003/04).


Please contact me with suggestions for the Séminaire théoriciens LPS-LPT de l'ENS, which is held on Thursday morning here at ENS (with cafe+croissants at 10:30).

A list of the 2004/2005 seminars can be found at our old site.
For other seminars in Paris, consult the Semparis seminar announcement server.

ICAM workshop PFPP-2002

Website for the ICAM Workshop on the Physics of Frustration, June 19-22 2002 in Santa Fe, New Mexico.

A general list of conferences and events can be found at the physicsweb .

Postdoc positions

The Laboratoire de Physique Théorique has postdoc openings in most years. If you are interested in working with me, please contact me directly.

Students and postdocs

Mark Goerbig (now CNRS and Universite Paris-Sud)
Syed Hassan (now Universite de Sherbrooke)
Sergei Isakov (now University of Toronto)
Kumar Raman (now UIUC)

Gunnar Moeller
Sergey Pankov

Contact details

Ecole Normale Supérieure
24, rue Lhomond
75231 Paris Cedex 05

electronic: XXXX (at) lpt [dot] ens [dot] fr , replacing the X's by my surname.
Bureau: GHB
Téléphone: +33 1 44 32 35 66
Fax: +33 1 43 36 76 66