100 citations · 698 across the 29 of their papers we have counts for
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Dynamical scaling laws in the quantum -state clock chain
Jia-Chen Tang, Wen-Long You, Myung-Joong Hwang +1
We show that phase transitions in the quantum -state clock model for can be characterized by an enhanced decay behavior of the Loschmidt echo via a small quench. The…
Quantum Many-Body Scars in Spin-1 Kitaev Chains
Wen-Long You, Zhuan Zhao, Jie Ren +3
To provide a physical example of quantum scars, we study the many-body scars in the spin-1 Kitaev chain where the so-called PXP Hamiltonian is exactly embedded in the spectra. Rega…
Dynamical scaling of Loschmidt echo in non-Hermitian systems
Jia-Chen Tang, Su-Peng Kou, Gaoyong Sun
We show that non-Hermitian biorthogonal many-body phase transitions can be characterized by the enhanced decay of Loschmidt echo. The quantum criticality is numerically investigate…
Quantum phase transitions in the spin-1 Kitaev-Heisenberg chain
Wen-Long You, Gaoyong Sun, Jie Ren +2
Recently, it has been proposed that higher-spin analogues of the Kitaev interactions may also occur in a number of materials with strong Hund's and spin-orbit coupling. In th…
Biorthogonal quantum criticality in non-Hermitian many-body systems
Gaoyong Sun, Jia-Chen Tang, Su-Peng Kou
We develop the perturbation theory of the fidelity susceptibility in biorthogonal bases for arbitrary interacting non-Hermitian many-body systems with real eigenvalues. The quantum…
Anomalous Spontaneous Symmetry Breaking in non-Hermitian Systems with Biorthogonal Z2-symmetry
Meng-Lei Yang, Heng Wang, Cui-Xian Guo +3
Landau's spontaneous symmetry breaking theory is a fundamental theory that describes the collective behaviors in many-body systems. It was well known that for usual spontaneous sym…
Fidelity as a probe for a deconfined quantum critical point
Gaoyong Sun, Bo-Bo Wei, Su-Peng Kou
Deconfined quantum critical point was proposed as a second-order quantum phase transition between two broken symmetry phases beyond the Landau-Ginzburg-Wilson paradigm. However, nu…
Fidelity Susceptibility Study of Quantum Long-Range Antiferromagnetic Ising Chain
Gaoyong Sun
We study the fidelity susceptibility of quantum antiferromagnetic Ising chain with a long-range power law interaction using the large-scale density matrix renormalization g…
Exact asymptotic correlation functions of bilinear spin operators of the Heisenberg antiferromagnetic spin- chain
Temo Vekua, Gaoyong Sun
Exact asymptotic expressions of the uniform parts of the two-point correlation functions of bilinear spin operators in the Heisenberg antiferromagnetic spin- chain are…
Topological quasi-one-dimensional state of interacting spinless electrons
G. Sun, T. Vekua
By decreasing the transversal confinement potential in interacting one-dimensional spinless electrons and populating the second energetically lowest sub-band, for not too strong in…
Ground-state phases of rung-alternated spin-1/2 Heisenberg ladder
F. Amiri, G. Sun, H. -J. Mikeska +1
The ground-state phase diagram of Heisenberg spin-1/2 system on a two-leg ladder with rung alternation is studied by combining analytical approaches with numerical simulations. For…
Fidelity at Berezinskii-Kosterlitz-Thouless quantum phase transitions
G. Sun, A. K. Kolezhuk, T. Vekua
We clarify the long-standing controversy concerning the behavior of the ground state fidelity in the vicinity of a quantum phase transition of the Berezinskii-Kosterlitz-Thouless t…
Ferromagnetic spin-orbital liquid of dipolar fermions in zigzag lattices
G. Sun, A. K. Kolezhuk, L. Santos +1
Two-component dipolar fermions in zigzag optical lattices allow for the engineering of spin-orbital models. We show that dipolar lattice fermions permit the exploration of a regime…
Exploring spin-orbital models with dipolar fermions in zig-zag optical lattices
G. Sun, G. Jackeli, L. Santos +1
Ultra-cold dipolar spinor fermions in zig-zag type optical lattices can mimic spin-orbital models relevant in solid-state systems, as transition-metal oxides with partially filled…
Anomalous Spin Dynamics of Hubbard Model on Honeycomb Lattices
Gao-Yong Sun, Su-Peng Kou
In this paper, the honeycomb Hubbard model in optical lattices is investigated using O(3) non-linear sigma model. A possible quantum non-magnetic insulator in a narrow parameter re…
Quantum Non-Magnetic state near Metal-Insulator Transition - a Possible Candidate of Spin Liquid State
Gao-Yong Sun, Su-Peng Kou
In this paper, based on the formulation of an O(3) non-linear sigma model, we study the two-dimensional Pi-flux Hubbard model at half-filling. A quantum non-magnetic insulator is e…