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Molecular Bose-Einstein condensation and bound states in lithium niobate type ferroelectrics

A. BISWAS1,* , Y. M. SONG2

Affiliation

  1. Department of Electronics and Communication, NSHM Knowledge Campus, Durgapur, West Bengal – 713212, India
  2. Department of Electronics Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735, Republic of Korea

Abstract

The modal dynamics of both dark and bright solitons in lithium niobate is already established in Klein-Gordon lattice. For small oscillations, the modal dynamics is characterized as bound states, revealed via Associated Legendre polynomial. Bose Einstein condensation exclusively takes place around bosonic particles having different wave functions within the bound states. This paper tried to explore BEC in the realm of bound state for better understanding of switching phenomenon of devices. The pairing and interplay between the dark and bright solitons occur with their effect on the condensation. The bound state disappears after a critical frequency. The quasi-particles then become phonons in the unbound states that propagate through the domains..

Keywords

Bose-Einstein Condensation, Dark and Bright Solitons, Bound State.

Submitted at: June 28, 2015
Accepted at: Oct. 28, 2015

Citation

A. BISWAS, Y. M. SONG, Molecular Bose-Einstein condensation and bound states in lithium niobate type ferroelectrics, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 11-12, pp. 1885-1890 (2015)