Critical behavior of theXYspin chain with three-site interaction studied in terms of the Loschmidt echo

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LIAN Han-Li. Critical behavior of the XYspin chain with three-site interaction studied in terms of the Loschmidt echo[J]. Chinese Physics C, 2012, 36(6): 479-484. doi: 10.1088/1674-1137/36/6/001
LIAN Han-Li. Critical behavior of the XYspin chain with three-site interaction studied in terms of the Loschmidt echo[J]. Chinese Physics C, 2012, 36(6): 479-484. doi:10.1088/1674-1137/36/6/001 shu
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Received: 2011-11-30
Revised: 2012-02-03
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Critical behavior of theXYspin chain with three-site interaction studied in terms of the Loschmidt echo

      Corresponding author:LIAN Han-Li,
    • School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

      Abstract:The effect of the three-site interaction (α) on the critical behaviors of theXYspin chain is studied in terms of the Loschmidt echo (LE). The critical lines can be shifted byα, and the anisotropy parameter of theXYchain has no effect on the critical lines. The scaling behaviors of theLEreveal that the dynamical behaviors of the LE are reliable for characterizing quantum phase transition (QPT).

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