Scattering from a PT symmetric standing wave

Yuce C.

PHYSICS LETTERS A, vol.376, no.44, pp.2770-2774, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 376 Issue: 44
  • Publication Date: 2012
  • Doi Number: 10.1016/j.physleta.2012.08.024
  • Journal Name: PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2770-2774
  • Keywords: PT symmetric quantum mechanics, Non-Hermitian Hamiltonians, POTENTIALS
  • Anadolu University Affiliated: No

Abstract

We study the Kapitza-Dirac diffraction of a free beam particle in the presence of a PT symmetric standing wave. We discuss that the momentum and total probability are not conserved in the non-Hermitian scattering process. We show that the average momentum gain/loss does not vanish over a period even if the non-Hermitian optical potential changes periodically in time. We give the resonance conditions at which large momentum transfer is produced. (C) 2012 Elsevier B.V. All rights reserved.