https://doi.org/10.1140/epjb/e2012-30619-7
Regular Article
Possible condensation of Frenkel exciton polaritons in an organic nanofiber*
National Institute for Materials Science,
1-1 Namiki, Tsukuba
305-0044,
Japan
a
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Received: 16 July 2012
Received in final form: 12 November 2012
Published online: 25 February 2013
Abstract
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.
Contribution to the Topical Issue “Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials”, edited by Maria Antonietta Loi, Jasper Knoester and Paul H. M. van Loosdrecht.
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013
