Quantum Spinon Oscillations

Details Quantum Spinon Oscillations Quantum Spinon Oscillations

2011-02-18

arxiv.org/abs/1102.3726v3

Phys. Rev. B 83, 155119 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4.2 pages, 7 figures

Scientific paper

10.1103/PhysRevB.83.155119

The full quantum dynamics of a spinon under external magnetic fields is investigated by using the time-evolving block decimation (TEBD) method within the microcanonical picture of transport. We show that the center of the spinon oscillates back and forth in the absence of dissipation. The quantum many-body behavior can be understood in a single-particle picture of transport and Bloch oscillations, where quantum fluctuations induce finite life times. Transport, oscillations and lifetimes can be tuned to some degree separately by external fields. Other nontrivial dynamics such as resonance as well as chaos have also been discussed.

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