Solving the quantum nonlinear Schrodinger equation with deltatype impurity
Article, Preprint
English
OPEN
Caudrelier, V.
;
Mintchev, M.
;
Ragoucy, E.
(2005)
 Publisher: American Institute of Physics

Related identifiers:
doi: 10.1063/1.1842353

Subject:
QC  Mathematical Physics  High Energy Physics  Theory  Mathematics  Quantum Algebra  82B23, 81R50
We establish the exact solution of the nonlinear Schrodinger equation with a deltafunction impurity, representing a pointlike defect which reflects and transmits. We solve the problem both at the classical and the second quantized levels. In the quantum case the ZamolodchikovFaddeev algebra, familiar from the case without impurities, is substituted by the recently discovered reflectiontransmission (RT) algebra, which captures both particleparticle and particleimpurity interactions. The offshell quantum solution is expressed in terms of the generators of the RT algebra and the exact scattering matrix of the theory is derived. (C) 2005 American Institute of Physics.