量子相变；
Now we name this quantum phase transition without broken symmetry as topological quantum phase transition.
我们现在称这种不伴随对称性变化的相变为拓扑量子相变。
In low dimensional system, quantum phase transition controlled by the quantum fluctuation is worth to study.
在低维量子系统中，由量子涨落控制的量子相变是值得研究的问题。
Furthermore, the quantum phase transition in an easy-axis antiferromagnetic Heisenberg spin-1 chain is numerically studied.
其次，我们讨论了自旋为1的易磁化轴反铁磁海森堡链的量子相变。
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。
The quantum phase transition (QPT) occurs at zero temperature when the external parameters of some interacting many-body systems change to reach the critical values.
在许多多体量子系统中，随着系统某些外部参数达到它的临界值，在零温情况下量子系统会发生量子相变。
This kind of impurity quantum phase transition is of particularly significant in understanding the non-Fermi Liquid behavior in a large number of strongly correlated electron systems.
在强关联电子系统中，这种杂质量子状态的改变，即所谓杂质量子相变，可以导致出现复杂的非费米液体行为。
An introduction is given to the conformal symmetry, quantum conformal field theory and phase transition.
本文讨论了共形对称性，量子共形对称理论以及相变现象。
An introduction is given to the conformal symmetry, quantum conformal field theory and phase transition.
本文讨论了共形对称性，量子共形对称理论以及相变现象。
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