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cond-mat.stat-mech2017★ 49 cited
Full counting statistics in the spin-1/2 Heisenberg XXZ chain
Mario Collura, Fabian H. L. Essler, Stefan Groha
The spin-1/2 Heisenberg chain exhibits a quantum critical regime characterized by quasi long-range magnetic order at zero temperature. We quantify the strength of quantum fluctuati…
cond-mat.str-el2017★ 8 cited
Spinon decay in the spin-1/2 Heisenberg chain with weak next nearest neighbour exchange
Stefan Groha, Fabian H. L. Essler
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 w…