100 citations · 698 across the 29 of their papers we have counts for
29 papers
Aufbau Principle for Non-Hermitian Systems
Gaoyong Sun, Su-Peng Kou
We develop a generalized Aufbau principle for non-Hermitian systems that allows for building up the configurations of indistinguishable particles. The Aufbau rule of non-Hermitian…
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 criticality in interacting bosonic Kitaev-Hubbard models
Ya-Nan Wang, Wen-Long You, Gaoyong Sun
Motivated by recent work on the non-Hermitian skin effect in the bosonic Kitaev-Majorana model, we study the quantum criticality of interacting bosonic Kitaev-Hubbard models on a c…
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…
Quantum criticality and universality in the -wave paired Aubry-André-Harper model
Ting Lv, Tian-Cheng Yi, Liangsheng Li +2
We investigate the quantum criticality and universality in Aubry-André-Harper (AAH) model with -wave superconducting pairing in terms of the generalized fidelity susceptibil…
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…
Topological phases of spinless -orbital fermions in zigzag optical lattices
Gaoyong Sun, Wen-Long You, Tao Zhou
Motivated by the experiment [St-Jean {\it et al}., Nature Photon. {\bf 11}, 651 (2017)] on topological phases with collective photon modes in a zigzag chain of polariton micropilla…
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…
Dynamical quantum phase transitions in a spin chain with deconfined quantum critical points
Gaoyong Sun, Bo-Bo Wei
We analytically and numerically study the Loschmidt echo and the dynamical order parameters in a spin chain with a deconfined phase transition between a dimerized state and a ferro…
Dynamical Scaling Laws of Out-of-Time-Ordered Correlators
Bo-Bo Wei, Gaoyong Sun, Myung-Joong Hwang
The out-of-time-ordered correlator (OTOC) is central to the understanding of information scrambling in quantum many-body systems. In this work, we show that the OTOC in a quantum m…
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 and criticality of quantum Ising chain with long-range interactions
Zhangqi Zhu, Gaoyong Sun, Wen-Long You +1
We study the criticality of long-range quantum ferromagnetic Ising chain with algebraically decaying interactions via the fidelity susceptibility based on the exact diagona…
The optimal frequency window for Floquet engineering in optical lattices
Gaoyong Sun, André Eckardt
The concept of Floquet engineering is to subject a quantum system to time-periodic driving in such a way that it acquires interesting novel properties. It has been employed, for in…
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…
Topological Phases of Fermionic Ladders with Periodic Magnetic Fields
Gaoyong Sun
In recent experiments bosonic [Atala et al., Nat. Phys. 10, 588 (2014), B. K. Stuhl et al., Science 349, 1514 (2015)] as well as fermionic ladders [M. Mancini et al., Science 349,…
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…
Density-dependent synthetic magnetism for ultracold atoms in optical lattices
Sebastian Greschner, Daniel Huerga, Gaoyong Sun +2
Raman-assisted hopping can allow for the creation of density-dependent synthetic magnetism for cold neutral gases in optical lattices. We show that the density-dependent fields lea…
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…
Topological order-by-disorder in orbitally degenerate dipolar bosons in zig-zag lattice
G. Sun, T. Vekua
Spinor bosons offer conceptually simple picture of macroscopic quantum behavior of topological order-by-disorder: Paramagnetic state of two-component dipolar bosons in orbitally de…
Density-Dependent Synthetic Gauge Fields Using Periodically Modulated Interactions
S. Greschner, G. Sun, D. Poletti +1
We show that density-dependent synthetic gauge fields may be engineered by combining periodically modu- lated interactions and Raman-assisted hopping in spin-dependent optical latt…