Quantum tunneling decay due to a resonance state of negative energy and a decaying width
| Autor: | Gastón García-Calderón, Roberto Romo |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Europhysics Letters. 139:60001 |
| ISSN: | 1286-4854 0295-5075 |
| DOI: | 10.1209/0295-5075/ac8e2a |
| Popis: | By using an exact analytical formalism for quantum tunneling decay we show the existence of a regime of purely nonexponential decay for the survival probability in the full time interval and a propagating probability density along the external interaction region that evolves as a spreading process having no wavefront. This decaying regime follows from a complex pole of the propagator which in the wave number plane possesses an imaginary part larger than the corresponding real part, which implies a negative resonance energy and a decaying width, together with a dominant large overlap of the initial decaying state with the corresponding resonant state of the problem. |
| Databáze: | OpenAIRE |
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