8 citations · 8 across the 1 of their papers we have counts for
4 papers
Nature of polaron-molecule transition in Fermi polarons
Cheng Peng, Ruijin Liu, Wei Zhang +1
In this work, we explore the polaron and molecule physics by utilizing a unified variational ansatz with up to two particle-hole(p-h) excitations(V-2ph). We confirm the existence o…
A Non-Gaussian Variational Approach to Fermi Polarons in One- and Two-dimensional Lattices
Ruijin Liu, Yue-Ran Shi, Wei Zhang
We study the Fermi polaron problem of one mobile spin-up impurity immersed atop the bath consisting of spin-down fermions in one- and two-dimensional square lattices. We solve this…
Flat-band Ferromagnetism of the SU Hubbard Model on the Tasaki Lattice
Rui-Jin Liu, Wenxing Nie, Wei Zhang
We investigate the para-ferro transition of the repulsive SU() Hubbard model on one- and two-dimensional Tasaki lattices. Under certain restrictions for constructing localized m…
Ashkin-Teller criticality and weak-first-order behavior of phase transition to four-fold degenerate state in two-dimensional frustrated Ising antiferromagnets
R. M. Liu, W. Z. Zhuo, J. Chen +5
We study the thermal phase transitions of the four-fold degenerate phases (the plaquette and single stripe states) in two-dimensional frustrated Ising model on the Shastry-Sutherla…