Spinon decay in the spin-1/2 Heisenberg chain with weak next nearest neighbour exchange
Integrable models support elementary excitations with infinite lifetimes. In the spin-1/2 Heisenberg chain these are known as spinons. We consider the stability of spinons when a weak integrability breaking perturbation is added to the Heisenberg chain in a magnetic field. We focus on the case where...
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| Médium: | Journal article |
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IOP Publishing
2017
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