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most citedA non-Hermitian symmetric Bose-Hubbard model: eigenvalue rings from unfolding higher-order exceptional points

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math-ph2008★ 228 cited

A non-Hermitian symmetric Bose-Hubbard model: eigenvalue rings from unfolding higher-order exceptional points

E. M. Graefe, U. Guenther, H. J. Korsch +1

We study a non-Hermitian symmetric generalization of an -particle, two-mode Bose-Hubbard system, modeling for example a Bose-Einstein condensate in a double well potential…