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math-ph2004
Spontaneous symmetry breaking in the non-linear Schrodinger hierarchy with defect
Vincent Caudrelier, Eric Ragoucy
We introduce and solve the one-dimensional quantum non-linear Schrodinger (NLS) equation for an N-component field defined on the real line with a defect sitting at the origin. The…
hep-th2004
The quantum non-linear Schrodinger model with point-like defect
V. Caudrelier, M. Mintchev, E. Ragoucy
We establish a family of point-like impurities which preserve the quantum integrability of the non-linear Schrodinger model in 1+1 space-time dimensions. We briefly describe the co…