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Non-hermitian approach to decaying ultracold bosonic systems

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 نشر من قبل Sandro Wimberger
 تاريخ النشر 2013
  مجال البحث فيزياء
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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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