In disordered bosonic systems, the 2D spectroscopy echo peak is controlled by the ratio of elastic to inelastic self-energies, and interaction-induced quantum fluctuations add broadening that cannot be rephased.
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Two-dimensional spectroscopy of bosonic collective excitations in disordered many-body systems
In disordered bosonic systems, the 2D spectroscopy echo peak is controlled by the ratio of elastic to inelastic self-energies, and interaction-induced quantum fluctuations add broadening that cannot be rephased.