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Quantum breathers in Heisenberg ferromagnetic chains with Dzyaloshinsky-Moriya interaction
Bing Tang1, De-Jun Li2, Yi Tang1
1Department of Physics, Xiangtan University, Xiangtan 411105, People's Republic of China.
Abstract:
We present an analytical study on quantum breathers in one-dimensional ferromagnetic XXZ chains with Dzyaloshinsky-Moriya interaction by means of the time-dependent Hartree approximation and the semidiscrete multiple-scale method. The stationary localized single-boson wave functions are obtained and these analytical solutions are checked by numerical simulations. With such stationary localized single-boson wave functions, we construct quantum breather states. Furthermore, the role of the Dzyaloshinsky-Moriya interaction is discussed.
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