Control of dynamical phase transitions and non-ergodic relaxation via spinor phases
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909005770653696 |
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| author | Austin-Harris, J. O. Sigdel, P. Binegar, C. Begg, S. E. Bilitewski, T. Liu, Y. |
| author_facet | Austin-Harris, J. O. Sigdel, P. Binegar, C. Begg, S. E. Bilitewski, T. Liu, Y. |
| contents | Utilizing ultracold spinor gases as large-scale, many-body quantum simulation platforms, we establish a toolbox for the precise control, characterization, and detection of nonequilibrium dynamics via internal spinor phases. We develop a method to extract the phase evolution from the observed spin population dynamics, allowing us to define an order parameter that sharply identifies dynamical phase transitions over a wide range of conditions. This work also demonstrates a technique for inferring spin-dependent interactions from a single experimental time trace, in contrast to the standard approach that requires mapping a cross section of the phase diagram, with immediate applications to systems experiencing complex time-dependent interactions. Additionally, we demonstrate experimental access to and control over non-ergodic relaxation dynamics, where states of similar energy in the (nominally) thermal region of the energy spectrum retain a dependence on the initial state, via the manipulation of spinor phases, enabling the study of non-ergodic thermalization dynamics connected to quantum scarring. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_03720 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Control of dynamical phase transitions and non-ergodic relaxation via spinor phases Austin-Harris, J. O. Sigdel, P. Binegar, C. Begg, S. E. Bilitewski, T. Liu, Y. Quantum Gases Utilizing ultracold spinor gases as large-scale, many-body quantum simulation platforms, we establish a toolbox for the precise control, characterization, and detection of nonequilibrium dynamics via internal spinor phases. We develop a method to extract the phase evolution from the observed spin population dynamics, allowing us to define an order parameter that sharply identifies dynamical phase transitions over a wide range of conditions. This work also demonstrates a technique for inferring spin-dependent interactions from a single experimental time trace, in contrast to the standard approach that requires mapping a cross section of the phase diagram, with immediate applications to systems experiencing complex time-dependent interactions. Additionally, we demonstrate experimental access to and control over non-ergodic relaxation dynamics, where states of similar energy in the (nominally) thermal region of the energy spectrum retain a dependence on the initial state, via the manipulation of spinor phases, enabling the study of non-ergodic thermalization dynamics connected to quantum scarring. |
| title | Control of dynamical phase transitions and non-ergodic relaxation via spinor phases |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2511.03720 |