A one-dimensional harmonically trapped ideal system with an impurity (Dr. A. Volosniev)

  • Datum: 17.03.2015
  • Uhrzeit: 11:30 - 14:00
  • Vortragende(r): Dr. Artem Volosniev, Aarhus Universitet, Denmark
  • Raum: B 2.46
  • Gastgeber: MPQ, Theory Division
We study impure mesoscopic one-dimensional ensembles with majority particles either non-interacting fermions or bosons.

Assuming a short-range interparticle potential I will first discuss an eigenspectrum for a fermionic host medium; there a very strong repulsive interaction realizes a spin chain, the coupling coefficients for which can be established if the masses of impurity and majority are the same. Next I will address some ground state properties of an impurity in a bosonic bath and I also sketch what happens if the interaction strength is suddenly changed.

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