JRC 2013 - JRC 2014

Pour nous contacter

Pour nous contacter

Jean-Marc Berroir
Directeur du Labex
directeur@phys.ens.fr

Cécile Margossian
Directrice adjointe du Labex
cecile.margossian@phys.ens.fr

Junior Research Chairs

Chaque année, le Labex recrute troix nouveaux JRC.
Pour en savoir plus sur la procédure de recrutement et le calendrier, cliquez ici.
Voir également ci-dessous l’affiche ‘Creating links that last a lifetime’.

Master de Physique Fondamentale

L’appel à candidatures pour la session 2015/2016 est cloturé :

Pour toute question administrative concernant le master ICFP, vous pouvez nous contacter à l’adresse suivante :
applicationicfp@phys.ens.fr

- Tatsuo Azeyanagi, Anastasia Fialkov, Michael Koepf :

 

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Tatsuo Azeyanagi

Short scientific biography and research activities
Tatsuo Azeyanagi received his Ph.D. in Science from Kyoto University in March, 2011. He then continued his research at RIKEN and is a Fellow of Harvard University now. He has worked on string theory and quantum field theories.

His current main research interests are :

- microscopic analysis of black holes based on string theory and gauge/gravity dualities
- large-N gauge theories, matrix models and their relations to string/M theory.

Selected publications
- "The Spectrum of Strings on Warped AdS3xS3," Tatsuo Azeyanagi, Diego M. Hofman, Wei Song and Andrew Strominger, arXiv:1207.5050[hep-th]
- "Large-N reduction in QCD-like theories with massive adjoint fermions," Tatsuo Azeyanagi, Masanori Hanada, Mithat Unsal and Ran Yacoby, Phys.Rev.D82(2010)125013
- "Higher-Derivative Corrections to the Asymptotic Virasoro Symmetry of 4d Extremal Black Holes," Tatsuo Azeyanagi, Geoffrey Compere, Noriaki Ogawa, Yuji Tachikawa and Seiji Terashima, Prog.Theor.Phys.122(2009)355-384
- "Phase structure of twisted Eguchi-Kawai model," Tatsuo Azeyanagi, Masanori Hanada, Tomoyoshi Hirata and Tomomi Ishikawa, JHEP 0801(2008)025
- "Near Extremal Black Hole Entropy as Entanglement Entropy via AdS2/CFT1," Tatsuo Azeyanagi, Tatsuma Nishioka and Tadashi Takayanagi, Phys.Rev.D77(2008)064005

 

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Anastasia Fialkov

Short scientific biography and research activities
My research interests are very broad and include different topics in theoretical cosmology and astrophysics, such as 21-cm cosmology, large-scale structure, the Cosmic Microwave Background radiation, gravitational lensing, inflation and other related fields.

At present, I explore the properties of the redshifted 21-cm signal of neutral hydrogen from the epoch of primordial star formation (10 < z < 60) and analyze prospects for future detection of the 21-cm signal by instruments such as Square Kilometer Array.

I am also interested in modeling and constraining astrophysical processes at high redshifts, as well as developing methods to learn about the nature of dark matter and dark energy using future 21-cm measurements.
I did my PhD at Tel Aviv University working with Prof. N. Itzhaki and Prof. R. Barkana on two subjects : cosmological signature of pre-inflationary relics, and first stars and their imprints in the 21-cm signal.

Selected publications
- "The 21-cm signature of the first stars during the Lyman-Werner feedback era", Fialkov A., Barkana R., Visbal E., Tseliakhovich D., Hirata C. M., MNRAS, submitted
- "The signature of the first stars in atomic hydrogen at redshift 20’’, Visbal E., Barkana R., Fialkov A., Tseliakhovich D., Hirata C. M., 2012 Nature
- "Impact of the relative motion between dark matter and baryons on the first stars : semi-analytical modelling" Fialkov A., Barkana R., Tseliakhovich D., Hirata C. M., 2012, MNRAS, 242
- "How Sensitive is the CMB to a Single Lens ?" Rathaus B., Fialkov A., Itzhaki N., 2011 JCAP, 033
- "Cosmological Imprints of Pre-Inflationary Particles" Fialkov A., Itzhaki N., Kovetz E. D., 2010, JCAP, 004

 

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Michael Koepf

Short scientific biography and research activities
As a mathematically inclined student of physics at the University of Münster, Germany, Michael Koepf was attracted to the science of nonlinear dynamics and self-organization. During his PhD studies, he applied his expertise in this area to develop a theoretical model of the spontaneous formation of nanoscopic stripe patterns in coating processes using mono-molecular layers - a research project that allowed to bridge between fundamental science and technological application.

After obtaining his PhD, Michael’s main interest shifted towards the ultimate form of self-organization : Life. Receiving a postdoctoral scholarship from the Human Frontier Science Program, he moved to the Technion in Haifa, Israel, to work on the mathematical description of biological and bio-mimetic materials in various contexts, ranging from the dynamics of tissue during wound healing to artificial muscles made of nematic elastomers, fascinating materials that combine the properties of liquid crystals and rubbers.

In his project "Growth and Development in Biological Systems : From Bacteria to Olive Trees" he will now work together with his colleagues at the ENS on growth and development on the various different scales of life, from growing bacteria colonies to growth processes in larger plants and animals. Perpetual change by growth and self-organized restructuring is a defining property of life. Its understanding remains a major challenge to modern science as it is a prerequisite of new biotechnology and the medicine of our future. Michael hopes that his research will help to pave the way in this direction.
More information regarding Michael’s research can be found on his website www.michaelkoepf.de

Selected publications
- “A continuum model of epithelial spreading” accepted by Soft Matter (2013) M. H. Köpf, L. M. Pismen
- “Substrate-mediated pattern formation in monolayer transfer - a reduced model” New Journal of Physics 14 (2012) 023016 M. H. Köpf, S. V. Gurevich, R. Friedrich, U. Thiele :
- “Structure Formation by Dynamic Self-Assembly” Small 8 (2012) 488-503 L. Li, M. H. Köpf, S. V. Gurevich, R. Friedrich, L. F. Chi :
- “Impact of Temperature on LB-Patterning of DPPC on Mica” Langmuir 27 (2011) 12354-12360 M. H. Köpf, H. Harder, J. Reiche, S. Santer :
- “Pattern Formation in Monolayer Transfer Systems with Substrate-Mediated Condensation” Langmuir 26 (2010) 10444-1044 M. H. Köpf, S. V. Gurevich, R. Friedrich, L. F. Chi.

 Incoming JRC Holders : academic year 2014-2017

Current JRC Holders academic year 2014-2017
*Badih Assaf

Short scientific biography and research activities

My research interests are primarily focused on studying and understanding the electronic properties of 2D materials and topological insulators. The most common 2D material is graphene which is essentially a single atomic sheet of carbon. Topological insulators, on the other hand, are 3D materials that are semiconducting in the bulk but highly conducting on the surface. Such materials are extremely attractive as potential silicon alternatives in data processing devices as well as for applications in memory devices and optoelectronics.

After I completed my Bachelors degree in physics at the American University of Beirut in 2009, I spent five years as a graduate student at Northeastern University. As a member of the Heiman group at Northeastern, and a visiting scientist at MIT with the Moodera group, I spent the bulk of my PhD work studying quantum coherent transport in topological insulator thin films grown by molecular beam epitaxy. I also took part in a project that involved studying the properties of novel spin-gapless Heusler alloys.

As a JRC at the Ecole Normale Supérieure, I will be directly involved with groups from the Laboratoire Pierre Aigrain that are working on probing the fundamental electronic properties of 2D materials as well as different topological material systems (Bi2Se3, Bi2Te3…) using gigahertz transport probes and terahertz spectroscopy.

Selected Publications

- B.A. Assaf, F. Katmis, P. Wei, B. Satpati, Z. Zhang, J.S. Moodera, D. Heiman, “High-Mobility Two-Dimensional Conduction Channel in Topological Crystalline Insulator SnTe Thin Films”, submitted.
- M.E. Jamer, B.A. Assaf, T. Devakul and D. Heiman, “Magnetic and transport properties of spin gapless Mn2CoAl films”, Applied Physics Letters, 103, 142403 (2013), Arxiv 1309.6660
- P. Wei, F. Katmis, B.A. Assaf, H. Steinberg, P. Jarillo-Herrero, D. Heiman, J.S. Moodera, “Exchange-coupling-induced symmetry breaking in topological insulators”, Physical Review Letters, 110, 186807 (2013)
- B.A. Assaf, T. Cardinal, P. Wei, F. Katmis, J.S. Moodera, D. Heiman, “Linear Magnetoresistance in Topological Insulator Thin Films : Quantum Phase Coherence Effects at High Temperatures”, Applied Physics Letters 102, 012102 (2013), Arxiv : 1205.4635.
- B.A. Assaf, T. Cardinal, P. Wei, F. Katmis, J.S. Moodera, D. Heiman, “Modified Electrical Transport Probe Design for Standard Magnetometer”, Review of Scientific Instruments 83, 033904 (2012), Arxiv : 1203.0682.

 

 Maurizio Fagotti

Short scientific biography and research activities

I did my PhD at the University of Pisa (Italy) under the supervision of Prof. Pasquale Calabrese. We focussed on two subjects of research in low-dimensional quantum many-body systems : the scaling behaviour of the entanglement entropies (von Neumann and Rényi entropies) and the non-equilibrium time evolution of a state after a sudden quench of a global Hamiltonian parameter (global quantum quench). In autumn 2011 I moved to Oxford (UK) as a postdoctoral research assistant to collaborate with Prof. Fabian Essler on the latter topic. My current research interests are well characterised by the following keywords : quantum quenches, integrable models, relaxation/thermalisation, entanglement.

Selected Publications :

- M. Fagotti, “On Conservation Laws, Relaxation and Pre-relaxation after a Quantum Quench”, arXiv:1401.1064 (2014)
- M. Fagotti and F.H.L. Essler, “Stationary behaviour of observables after a quantum quench in the spin-1/2 Heisenberg XXZ chain”, J. Stat. Mech. (2013) P07012
- M. Fagotti and F.H.L. Essler, “Reduced Density Matrix after a Quantum Quench”, Phys. Rev. B 87, 245107 (2013)
- F.H.L. Essler, S. Evangelisti, and M. Fagotti, “Dynamical Correlations after a Quantum Quench”, Phys. Rev. Lett. 109, 247206 (2012)
- P. Calabrese, F.H.L. Essler, and M. Fagotti, “Quantum Quench in the Transverse Field Ising Chain”, Phys. Rev. Lett. 106, 227203 (2011)

Pour nous contacter

Jean-Marc Berroir
Directeur du Labex
directeur@phys.ens.fr

Cécile Margossian
Directrice adjointe du Labex
cecile.margossian@phys.ens.fr

Junior Research Chairs

Chaque année, le Labex recrute troix nouveaux JRC.
Pour en savoir plus sur la procédure de recrutement et le calendrier, cliquez ici.
Voir également ci-dessous l’affiche ‘Creating links that last a lifetime’.

Master de Physique Fondamentale

L’appel à candidatures pour la session 2015/2016 est cloturé :

Pour toute question administrative concernant le master ICFP, vous pouvez nous contacter à l’adresse suivante :
applicationicfp@phys.ens.fr