Quantized Breathers in a Double Sine-gordon System
نویسندگان
چکیده
We examine the excitations of a quasi-one dimensional easy plane antiferromagnet, in a symmetry breaking applied magnetic field. The antiferromagnetic exchange includes a small Dzyaloshinski Moriya component that produces the easy plane. In the classical continuum limit, this system is described by a double-sine-Gordon field theory, which supports soliton excitations and the multi spin wave bound states/resonances of the discrete spin system. The latter correspond to the quantized breather excitations of the double sine Gordon field theory.
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تاریخ انتشار 2016