Dr. Santosh Kumar, along with his international collaborators, recently solved an old problem related to compound nucleus scattering by analytically calculating, among other things, the exact distribution of off-diagonal cross sections associated with scattering in quantum chaotic systems. These results were compared with data from microwave and compound-nucleus experiments. In particular, the transition from isolated resonances towards the Ericson regime of strongly overlapping ones was addressed and a very good agreement was found. These exact results are extremely important due to the fact that cross sections are accessible in scattering experiments and therefore predictions of this work can be tested in any quantum chaotic scattering experiment.
This research work was published in Physical Review Letters and was also selected as Editors’ suggestion.
Distribution of off-diagonal cross sections in quantum chaotic scattering: Exact results and data comparison,
S Kumar, B Dietz, T Guhr, A Richter,
Physical Review Letters 119, 244102 (2017). [Editors' Suggestion]