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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.04139 |
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| _version_ | 1866914532303044608 |
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| author | Janssen, Oliver Kleban, Matthew Norton, Cameron |
| author_facet | Janssen, Oliver Kleban, Matthew Norton, Cameron |
| contents | We study the decay of general initial states out of a metastable potential well in quantum mechanics. We provide a closed-form expression for the probability current that tunnels through the barrier in terms of the resonant states into which the initial state can be decomposed. All ingredients in the equation are computed analytically to first subleading order in the semiclassical limit. Specializing to a coherently-oscillating initial state, we derive an approximation to the time-dependent decay rate and demonstrate its accuracy by comparing it to a numerical solution of the Schrödinger equation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_04139 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Tunneling from an oscillating initial state in quantum mechanics Janssen, Oliver Kleban, Matthew Norton, Cameron Quantum Physics High Energy Physics - Theory We study the decay of general initial states out of a metastable potential well in quantum mechanics. We provide a closed-form expression for the probability current that tunnels through the barrier in terms of the resonant states into which the initial state can be decomposed. All ingredients in the equation are computed analytically to first subleading order in the semiclassical limit. Specializing to a coherently-oscillating initial state, we derive an approximation to the time-dependent decay rate and demonstrate its accuracy by comparing it to a numerical solution of the Schrödinger equation. |
| title | Tunneling from an oscillating initial state in quantum mechanics |
| topic | Quantum Physics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2605.04139 |