Phase Transitions in Nonreciprocal Driven-Dissipative Condensates
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911174830850048 |
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| author | Belyansky, Ron Weis, Cheyne Hanai, Ryo Littlewood, Peter B. Clerk, Aashish A. |
| author_facet | Belyansky, Ron Weis, Cheyne Hanai, Ryo Littlewood, Peter B. Clerk, Aashish A. |
| contents | We investigate the influence of boundaries and spatial nonreciprocity on nonequilibrium driven-dissipative phase transitions. We focus on a one-dimensional lattice of nonlinear bosons described by a Lindblad master equation, where the interplay between coherent and incoherent dynamics generates nonreciprocal interactions between sites. Using a mean-field approach, we analyze the phase diagram under both periodic and open boundary conditions. For periodic boundaries, the system always forms a condensate at nonzero momentum and frequency, resulting in a time-dependent traveling wave pattern. In contrast, open boundaries reveal a far richer phase diagram, featuring multiple static and dynamical phases, as well as exotic phase transitions, including the spontaneous breaking of particle-hole symmetry associated with a critical exceptional point and phases with distinct bulk and edge behavior. Our model does not require post-selection and is experimentally realizable in platforms such as superconducting circuits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_05267 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Phase Transitions in Nonreciprocal Driven-Dissipative Condensates Belyansky, Ron Weis, Cheyne Hanai, Ryo Littlewood, Peter B. Clerk, Aashish A. Quantum Physics Mesoscale and Nanoscale Physics Quantum Gases Statistical Mechanics We investigate the influence of boundaries and spatial nonreciprocity on nonequilibrium driven-dissipative phase transitions. We focus on a one-dimensional lattice of nonlinear bosons described by a Lindblad master equation, where the interplay between coherent and incoherent dynamics generates nonreciprocal interactions between sites. Using a mean-field approach, we analyze the phase diagram under both periodic and open boundary conditions. For periodic boundaries, the system always forms a condensate at nonzero momentum and frequency, resulting in a time-dependent traveling wave pattern. In contrast, open boundaries reveal a far richer phase diagram, featuring multiple static and dynamical phases, as well as exotic phase transitions, including the spontaneous breaking of particle-hole symmetry associated with a critical exceptional point and phases with distinct bulk and edge behavior. Our model does not require post-selection and is experimentally realizable in platforms such as superconducting circuits. |
| title | Phase Transitions in Nonreciprocal Driven-Dissipative Condensates |
| topic | Quantum Physics Mesoscale and Nanoscale Physics Quantum Gases Statistical Mechanics |
| url | https://arxiv.org/abs/2502.05267 |