218 citations · 450 across the 7 of their papers we have counts for
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Dynamic properties of the spin-1/2 XY chain with three-site interactions
Taras Krokhmalskii, Oleg Derzhko, Joachim Stolze +1
We consider a spin-1/2 XY chain in a transverse (z) field with multi-site interactions. The additional terms introduced into the Hamiltonian involve products of spin components rel…
Quantum integrability and nonintegrability in the spin-boson model
Vyacheslav V. Stepanov, Gerhard Muller, Joachim Stolze
We study the spectral properties of a spin-boson Hamiltonian that depends on two continuous parameters (interaction strength) and (integrability swi…
Dynamic properties of quantum spin chains: Simple route to complex behavior
Taras Verkholyak, Oleg Derzhko, Taras Krokhmalskii +1
We examine dynamic structure factors of spin-1/2 chains with nearest-neighbor interactions of XX and Dzyaloshinskii-Moriya type, and with periodic and random changes in the sign of…