. An example from physics is given by quasi-normal modes of black holes which appear in long-time asymptotics of gravitational waves.
This book concentrates mostly on the simplest case of scattering by compactly supported potentials but provides pointers to modern literature where more general cases are studied. It also presents a recent approach to the study of resonances on asymptotically hyperbolic manifolds. The last two chapters are devoted to semiclassical methods in the study of resonances.
Semyon Dyatlov: University of California, Berkeley, CA and MIT, Cambridge, MA,
Maciej Zworski: University of California, Berkeley, CA