Theoretical physics / Elméleti fizika

Francesco Giacosa (Jan Kochanowski University, Kielce): Aspects of non-exponential decay

Europe/Budapest
Tanacsterem

Tanacsterem

Description

Both in quantum mechanics and in quantum field theory an unstable quantum system is not described by an exponential decay law. Deviations exist and can be sizable at short and at long times, in turn showing that the system possesses a memory of its preparation time. We investigate these deviations in general and for the case in which two (or more) decay channels for an unstable state are present, Moreover, we study the influence of the measurement on the decay law.  In the end, the subtle and interesting link between decay law and a boost transformation is also addressed.