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The Gamow Golden Rule of Multichannel Resonances
Rafael de la Madrid, Rodolfo Id Betan·March 10, 2026
Quantum Physicsnucl-th
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Abstract
We construct the Gamow Golden Rule of multichannel scattering, and use it to obtain the decay distributions, the partial decay constants, the partial decay widths, and the branching fractions of a resonance that has several decay modes. We exemplify the results using two coupled-channel square well potentials.