Dicke superradiance, Bose-Einstein condensation of photons and spontaneous symmetry breaking

Vivek M. Vyas; Prasanta K. Panigrahi; V. Srinivasan

doi:10.1140/epjp/s13360-022-03047-1

EPJ

Dicke superradiance, Bose-Einstein condensation of photons and spontaneous symmetry breaking

Vivek M. Vyas¹^a, Prasanta K. Panigrahi² and V. Srinivasan³

¹ Government Engineering College, Indian Institute of Information Technology Vadodara, Sector 28, 382028, Gandhinagar, India
² Indian Institute of Science Education and Research (IISER) Kolkata, 741 246, Mohanpur, Nadia, India
³ Department of Theoretical Physics, Guindy Campus, University of Madras, 600 025, Chennai, India

Received: 24 February 2022
Accepted: 5 July 2022
Published online: 15 July 2022

Abstract

It is shown that the phenomenon of Dicke superradiance essentially occurs due to spontaneous symmetry breaking. Two generalised versions of the Dicke model are studied, and compared with a model that describes photonic Bose-Einstein condensate, which was experimentally realised sometime back. In all the models, it is seen that the occurrence of spontaneous symmetry breaking is responsible for coherent radiation emission.