Excitation spectroscopy of vortex lattices in a rotating Bose-Einstein condensate

TL;DR

This paper numerically investigates the excitation spectrum of vortex lattices in rotating Bose-Einstein condensates, revealing complex dynamics beyond traditional hydrodynamic models.

Contribution

It provides a detailed numerical analysis of Bogoliubov-de Gennes quasiparticle excitations in regimes where standard assumptions fail, introducing new insights into vortex lattice dynamics.

Findings

Numerical spectrum of quasiparticle excitations obtained

Identification of features beyond hydrodynamic models

Analysis of complex vortex lattice dynamics

Abstract

Excitation spectroscopy of vortex lattices in rotating Bose-Einstein condensates is described. We numerically obtain the Bogoliubov-deGenne quasiparticle excitations for a broad range of energies and analyze them in the context of the complex dynamics of the system. Our work is carried out in a regime in which standard hydrodynamic assumptions do not hold, and includes features not readily contained within existing treatments.