Quenching small quantum gases: Genesis of the orthogonality catastrophe
arXiv:1405.6031 · doi:10.1103/PhysRevA.90.013617
Abstract
We study the dynamics of two strongly interacting bosons with an additional impurity atom trapped in a harmonic potential. Using exact numerical diagonalization we are able to fully explore the dynamical evolution when the interaction between the two distinct species is suddenly switched on (quenched). We examine the behavior of the densities, the entanglement, the Loschmidt echo and the spectral function for a large range of inter-species interactions and find that even in such small systems evidence of Anderson's orthogonality catastrophe can be witnessed.
6 pages, 5 figures, Accepted for publication in Physical Review A
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- A variational approach to repulsively interacting three-fermion systems in a one-dimensional harmonic trap
- Coherent Oscillations in Small Fermi Polaron Systems
- Probing the out-of-equilibrium dynamics of two interacting atoms
- Nonadiabatic energy fluctuations of scale-invariant quantum systems in a time-dependent trap
- Arnold's potentials and quantum catastrophes
- Quantum Coherent Control via Pauli Blocking