Chennai Mathematical Institute

Seminars




2.00 pm, Lecture Hall 803
Unruh-DeWitt detector in presence of multiple scalar fields : A Toy Model

Ashmita Das
IIT Guwahati.
04-04-19


Abstract

Applications of Unruh-Fulling (UF) effect are well studied in literature via the interaction of Unruh-DeWitt (UD) detector and single scalar field. In this work, we investigate a toy model, where the detector is interactingsimultaneously with the multiple scalar fields. Our study reveals that the transition rate of the system significantly depends on the acceleration of the detector and the number of scalar fields (n). For n ≫ 1, there exists a critical acceleration, beyond which the transition rate becomes drastically high than the accelerations below the critical point. The appearance of such critical point never occurs in case of the interaction of UD detector and single scalar field.