Bloch walls and macroscopic string states in Bethe's solution of the heisenberg ferromagnetic linear chain
نویسندگان
چکیده
We present a calculation of the lowest excited states of the Heisenberg ferromagnet in 1D for any wave vector. These turn out to be string solutions of Bethe's equations with a macroscopic number of particles in them. They are identified as generalized quantum Bloch wall states, and a simple physical picture is provided for the same.
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عنوان ژورنال:
- Physical review letters
دوره 85 13 شماره
صفحات -
تاریخ انتشار 2000