Non-hermitian approach to decaying ultracold bosonic systems

6th International Workshop DICE2012 Spacetime – Matter – Quantum Mechanics: From the Planck Scale to Emergent Phenomena

物理学;力学

Wimberger, Sandro^1 ; Parra-Murillo, Carlos A^1 ; Kordas, Georgios^1

Institut für Theoretische Physik, Center for Quantum Dynamics, Universität Heidelberg, D-69120 Heidelberg, Germany^1

关键词: Atom optics;    Bosonic systems;    Effective Hamiltonian;    Experimental techniques;    Many-body systems;    Quantum spectrum;    Quantum state;    Ultracold bosons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/442/1/012029/pdf
DOI  :  10.1088/1742-6596/442/1/012029

学科分类：力学，机械学

来源: IOP

【 摘 要 】

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.