Name : Corinna Kollath Room : 203B Telephone/Fax : +41 22 379 63 67 / 68 69 Email

from 1. Dec: Junior Research Chair at Ecole Polytechnique (Paris) POSTDOC POSITION AVAILABLE

Research interests:

In recent years significant advances in the field of ultra cold atoms have facilitated the engineering of quantum many-body systems with tunable interactions and geometries. For example generic condensed matter systems could be mimicked with atoms in artificial lattice potentials created from standing wave laser potentials, so-called optical lattices. These quantum degenerate gases in optical lattices realize a cold atom analogue of a solid material with adjustable properties. The resulting interdisciplinary relations between cold atomic gases and condensed matter physics have triggered a new wave of research in this field both experimentally and theoretically. It is anticipated that long-standing questions of quantum many-body physics can be resolved using cold atoms in optical lattices. Prominent examples of open questions are the dynamics of strongly interacting systems and the quantum phases of the Hubbard model in two dimensions which is suggested to unravel the secrets of high-Tc superconductivity. However, the characterization of exotic quantum phases in optical lattices is a tough challenge and new methods need to be developed. In particular, analogs of methods well established in condensed matter physics, such as the scanning tunneling microscope, might reveal complex phases of atoms in optical lattices as the cold atom tunneling microscope. The realization of strongly correlated systems in and out of equilibrium in quantum gases and in nanostructures poses interesting questions which can be tackled theoretically only using state of the art methods as for example the newly developed adaptive time-dependent density matrix renormalization group method.

• Dipolar bosons in a planar array of one-dimensional tubes
  C. Kollath, J. S. Meyer, T. Giamarchi
  arXiv:0711.0889

• Spin-charge separation in two-component Bose-gases
  A. Kleine, C. Kollath, I.P. McCulloch, T. Giamarchi, and U. Schollwöck
  accepted at Phys. Rev. A
  arXiv:0706.0709

• Cold atom tunneling microscopy
  C. Kollath, M. Köhl, and T. Giamarchi
  accepted at Phys. Rev. A
  arXiv:0704.1283
  see as well "Microscope could scan optical lattices" in PhysicsWeb.org

• Mixture of bosonic and spin-polarized fermionic atoms in an optical lattice
  L. Pollet, C. Kollath, U. Schollwöck, and M. Troyer
  cond-mat/0609604.

• Quench dynamics and non equilibrium phase diagram of the Bose-Hubbard model
  C. Kollath, A. Laeuchli, and E. Altman
  Phys. Rev. Lett. 98, 180601 (2007)
  cond-mat/0607235.

• Cold atoms: New aspects of spin and charge separation
  C. Kollath and U. Schollwöck
  New J. Phys. 8, 220 (2006).

• Modulation spectroscopy with ultracold fermions in an optical lattice
  C. Kollath, A. Iucci, I. McCulloch, and T. Giamarchi
  Phys. Rev. A 74, 041604(R) (2006)
  cond-mat/0608091.

• Spectroscopy of ultracold atoms by periodic lattice modulation
  C. Kollath, A. Iucci, T. Giamarchi, W. Hofstetter, and U. Schollwöck
  Phys. Rev. Lett. 97, 050402 (2006).
  cond-mat/0603721.

• Separation of spin and charge in cold Fermi-gases
  C. Kollath
  J. Phys. B: At. Mol. Opt. Phys. 39, S65 (2006).

• Spin-charge separation in cold Fermi-gases: a real time analysis
  C. Kollath, U. Schollwöck, W. Zwerger
  Phys. Rev. Lett. 95, 176401 (2005).
  cond-mat/0504299.

• One-dimensional density waves of ultracold bosons in an optical lattice
  C. Kollath, U. Schollwöck, J. von Delft and W. Zwerger
  Phys. Rev. A 71, 053606 (2005).
  cond-mat/0411403.

• Real-time dynamics in spin-1/2 chains with adaptive time-dependent DMRG
  D. Gobert, C. Kollath, U. Schollwöck and G. Schütz,
  Phys. Rev. E 71, 036102 (2005).
  cond-mat/0409692.

• Time-dependent density-matrix renormalization-group using adaptive effective Hilbert spaces
  A. J. Daley, C. Kollath, U. Schollwöck and G. Vidal
  J. Stat. Mech.: Theor. Exp. (2004) P04005
  cond-mat/0403313.

• Spatial correlations of trapped 1d bosons in an optical lattice
  C. Kollath, U. Schollwöck, J. von Delft and W. Zwerger
  Phys. Rev. A 69, 031601(R) (2004)
  cond-mat/0310388.

• Variational ansatz for the superfluid Mott-insulator transition in optical lattices
  Juan Jose Garcia-Ripoll, J. I. Cirac, P. Zoller, C. Kollath, U. Schollwöck, and J. von Delft
  Optics Express, Vol. 12, No. 1 - January 12, 2004, p. 42
  cond-mat/0306162.

• Segeln (Bootsklasse Korsar)
• Volleyball
• Surfen
• und, und, und