Research Topics

 

Research at the Institute for Theory of Statistical Physics can be divided in two fields:

 
  • electronic properties of low-dimensional mesoscopic systems
  • and the physics of strong laser fields

Electronic Properties of Mesoscopic Systems

Our interests range from model-like studies of the spectral and transport properties of correlated electrons in quantum dots and quantum wires to the physics of complex devices with potential applications in future nano- and molecular-electronics.

To investigate the physics of such systems we develop and apply novel many-body techiques, e.g. renormalization group methods. In addition we use established methods of quantum many-body theory such as perturbation theory, field theory, bosonization, and rate equations.

Specific Topics

  • correlation effects in quantum dots: Schoeller, Meden
  • molecular magnetism: Wegewijs, Schoeller
  • molecular electronics: Wegewijs, Schoeller
  • Luttinger liquid physics in quantum wires: Schoeller, Meden
  • mesoscopic systems out of equilibrium: Wegewijs, Schoeller
  • correlated electrons out of equilibrium: Meden, Schoeller
  • renormalization group methods for correlated fermion systems: Schoeller, Meden
  • dynamical modulation of mesoscopic systems: Schoeller

Recent Review

S. Andergassen, V. Meden, H. Schoeller, J. Splettstoesser, and M.R. Wegewijs
Charge transport through single molecules, quantum dots, and quantum wires
Nanotechnology 21, 272001 (2010) (cond-mat/1005.1187)

The Physics of Strong Laser Fields – AG Kull

The main research topic in our group is the study of matter in strong laser fields by theoretical and numerical methods. Laser pulses, reaching and exceeding atomic field strenghts over a short period in the femtosecond regime have become available over the past decade by novel amplification methods (chirped pulse amplification).
A variety of novel physical features in this field have attracted broad interest, ranging from high-order multi-photon processes in atoms (above threshold ionization) over anomalous heating mechanisms in strongly driven atomic clusters (Mie resonance) up to the acceleration of electrons to ultrarelativistic energies in plasma-wake-fields. Another aspect of research is the dynamics on ultrashort timescales that becomes experimentally accessible with few-cycle femtosecond and attosecond-pulses.

Specific Research Projects

  • Above-threshold ionization of atoms – ATI
  • Electron-ion collisions and inverse Bremsstrahlungabsorption in plasmas – IBA
  • Collisionless absorption
  • Laser pulse propagation and particle acceleration in relativistic plasmas
  • Computer simulation of classical and quantum plasmas
 

Third Party Funding

DFG-Logo Copyright: DFG