Possible condensation of Frenkel exciton polaritons in an organic nanofiber*
National Institute for Materials Science,
1-1 Namiki, Tsukuba
Received: 16 July 2012
Received in final form: 12 November 2012
Published online: 25 February 2013
We theoretically investigate a phase transition of Frenkel exciton polaritons in an organic nanofiber. Assuming a phenomenological Hamiltonian, we derive a mean field equation for the condensation after finding an effective action for the phenomenon using the functional integral method and stationary phase analysis. From a solution of the mean field equation, we construct a phase diagram for the condensation and highlight features that distinguish J- and H-aggregates. We also detail a connection with the superradiant phase transition, which has been studied using the Dicke model.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013