Impurity and soliton dynamics in a Fermi gas with nearest-neighbor interactions

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • University of Geneva

Kuvaus

We study spinless fermions with repulsive nearest-neighbor interactions perturbed by an impurity particle or a local potential quench. Using the numerical time-evolving block decimation method and a simplified analytic model, we show that the perturbations create a soliton-antisoliton pair. If solitons are already present in the bath, the two excitations have a drastically different dynamics: The antisoliton does not annihilate with the solitons and is therefore confined close to its origin while the soliton excitation propagates. We discuss the consequences for experiments with ultracold gases.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli063605
Sivut1-12
JulkaisuPhysical Review A
Vuosikerta95
Numero6
TilaJulkaistu - 7 kesäkuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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