Beyond Fermi's golden rule with the statistical Jacobi approximation
Many problems in quantum dynamics can be cast as the decay of a single quantum state into a continuum. The time-dependent overlap with the initial state, called the fidelity, characterizes this decay. We derive an analytic expression for the fidelity after a quench to an ergodic Hamiltonian. The exp...
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| Format: | Article |
| Language: | English |
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SciPost
2023-12-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.15.6.251 |