The ground energy per unit cell, spin correlation function and the spin gap are calculated.

计算了单个晶胞的基态能、自旋关联函数以及自旋能隙。

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Lower dimensional AFH models show some novel properties such as quasi-long-range-order, spin gap, quantum phase transition, etc.

由于低维体系中有很强的量子涨落，使这些体系呈现出许多新奇的特性，如会有自旋准长程序、自旋能隙、量子相变等现象。

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Gap Symmetry; Spin Fluctuation; Local Density of States.

能隙对称性；自旋涨落；局域态密度。

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The mobile gift cards are currently available at the Gap and its spin-off chains Banana Republic and Old Navy, as well as Williams-Sonoma and sister chains Pottery Barn, Pottery Barn Kids and West Elm.

FORBES: Gift Cards Will Be The Hot Holiday Present As Mobile Cards Gain Popularity

After some serious management upheaval, the Gap began to turn a corner this year, finally churning out fashion hits like brightly colored jeans at its flagship Gap chain, and Mad Men-inspired clothing at upscale spin-off Banana Republic.

FORBES: The Retailers That Have the Most To Gain -- Or Lose -- This Holiday Season