Non-Hermitian ultra-strong bosonic condensation through interaction-induced caging

• URL: http://arxiv.org/abs/2410.01258v2
• Date: Mon, 14 Oct 2024 14:19:28 GMT
• Title: Non-Hermitian ultra-strong bosonic condensation through interaction-induced caging
• Authors: Mengjie Yang, Luqi Yuan, Ching Hua Lee,
• Abstract summary: We uncover a new mechanism whereby the triple interplay of non-Hermitian pumping, bosonic interactions and nontrivial band topology leads to ultra-strong bosonic condensation. The extent of condensation goes beyond what is naively expected from the interaction-induced trapping of non-Hermitian pumped states.
• Score: 2.2230089845369094
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We uncover a new mechanism whereby the triple interplay of non-Hermitian pumping, bosonic interactions and nontrivial band topology leads to ultra-strong bosonic condensation. The extent of condensation goes beyond what is naively expected from the interaction-induced trapping of non-Hermitian pumped states, and is based on an emergent caging mechanism that can be further enhanced by topological boundary modes. Beyond our minimal model with 2 bosons, this caging remains applicable for generic many-boson systems subject to a broad range of density interactions and non-Hermitian hopping asymmetry. Our novel new mechanism for particle localization and condensation would inspire fundamental shifts in our comprehension of many-body non-Hermitian dynamics and opens new avenues for controlling and manipulating bosons.

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