Non-hermitian approach to decaying ultracold bosonic systems

Abstract

A paradigm model of modern atom optics is studied, strongly interacting ultracold bosons in an optical lattice. This many-body system can be artificially opened in a controlled manner by modern experimental techniques. We present results based on a non-hermitian effective Hamiltonian whose quantum spectrum is analyzed. The direct access to the spectrum of the metastable many-body system allows us to easily identify relatively stable quantum states, corresponding to previously predicted solitonic many-body structures.

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Cited by in corpus (6)

• Spectral analysis of two-dimensional Bose-Hubbard models
• Universal Hall conductance scaling in non-Hermitian Chern insulators
• Coherent control of dissipative dynamics in a periodically driven lattice array
• Non-Hermitian Model for Asymmetrical Tunneling
• A comparative study on different non-Hermitian approaches for modeling open quantum systems
• Generation of robust entangled states in a non-hermitian periodically driven two-band Bose-Hubbard system