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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2510.04267 |
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| _version_ | 1866917002804723712 |
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| author | Bakker, Lieuwe Barik, Suvendu Gritsev, Vladimir Yuzbashyan, Emil A. |
| author_facet | Bakker, Lieuwe Barik, Suvendu Gritsev, Vladimir Yuzbashyan, Emil A. |
| contents | We determine the late-time dynamics of a generic spin ensemble with inhomogeneous broadening - equivalently, qubits with arbitrary Zeeman splittings - coupled to a dissipative environment with strength decreasing as $1/t$. The approach to the steady state follows a power law, reflecting the interplay between Hamiltonian dynamics and vanishing dissipation. The decay exponents vary non-analytically with the ramp rate, exhibiting a cusp singularity, and $n$-point correlation functions factorize into one- and two-point contributions. Our exact solution anchors a universality class of open quantum systems with explicitly time-dependent dissipation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_04267 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Turning Down the Noise: Power-Law Decay and Temporal Phase Transitions Bakker, Lieuwe Barik, Suvendu Gritsev, Vladimir Yuzbashyan, Emil A. Quantum Physics Quantum Gases Statistical Mechanics Mathematical Physics We determine the late-time dynamics of a generic spin ensemble with inhomogeneous broadening - equivalently, qubits with arbitrary Zeeman splittings - coupled to a dissipative environment with strength decreasing as $1/t$. The approach to the steady state follows a power law, reflecting the interplay between Hamiltonian dynamics and vanishing dissipation. The decay exponents vary non-analytically with the ramp rate, exhibiting a cusp singularity, and $n$-point correlation functions factorize into one- and two-point contributions. Our exact solution anchors a universality class of open quantum systems with explicitly time-dependent dissipation. |
| title | Turning Down the Noise: Power-Law Decay and Temporal Phase Transitions |
| topic | Quantum Physics Quantum Gases Statistical Mechanics Mathematical Physics |
| url | https://arxiv.org/abs/2510.04267 |