Speaker
Dmitrii Trunin
(MIPT)
Description
The number of particles created in a resonant cavity is known to grow linearly at large evolution times [J. Math. Phys. 34, 2742 (1993)]. Employing the Schwinger-Keldysh diagrammatic technique, I show that nonlinear interactions generate nonzero quantum averages and enhance this number. For simplicity, I discuss a $\lambda \phi^4$ massless scalar field in a cavity with perfectly reflecting walls vibrating at twice the fundamental frequency of the cavity.
Primary author
Dmitrii Trunin
(MIPT)
