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所属单位：理学院

发表刊物：PHYSICAL REVIEW A

关键字：MATRIX RENORMALIZATION-GROUP PHASE-TRANSITION SIMULATOR PROPAGATION

摘要：We study the criticality of a long-range quantum ferromagnetic Ising chain with algebraically decaying interactions 1/r(alpha) via the fidelity susceptibility based on the exact diagonalization and the density-matrix renormalization-group techniques. We find that critical exponents change monotonically from the mean-field universality class to the short-range Ising universality class for intermediate alpha, which are consistent with recent results obtained from renormalization-group techniques. In addition, we determine the critical values for 1.8 <= a <= 3 from the finite-size scaling of the fidelity susceptibility. Our work provides very nice numerical data from the fidelity susceptibility for the quantum long-range ferromagnetic Ising chain.

ISSN号：2469-9926

是否译文：否

发表时间：2018-08-07

合写作者：朱张琪,尤文龙,施大宁

通讯作者：孙高永,施大宁,孙高永,施大宁