34 citations · 79 across the 8 of their papers we have counts for
17 papers
Theoretical study of phonon-mediated superconductivity beyond Migdal-Eliashberg approximation and Coulomb pseudopotential
Jie Huang, Zhao-Kun Yang, Xiao-Yin Pan +1
In previous theoretical studies of phonon-mediated superconductors, the electron-phonon coupling is treated by solving the Migdal-Eliashberg equations under the bare vertex approxi…
Pion-mediated Cooper pairing of neutrons: beyond the bare vertex approximation
Hao-Fu Zhu, Guo-Zhu Liu
In some quantum many particle systems, the fermions could form Cooper pairs by exchanging intermediate bosons. This then drives a superconducting phase transition or a superfluid t…
A non-perturbative study of the interplay between electron-phonon interaction and Coulomb interaction in undoped graphene
Zhao-Kun Yang, Xiao-Yin Pan, Guo-Zhu Liu
In condensed-matter systems, electrons are subjected to two different interactions under certain conditions. Even if both interactions are weak, it is difficult to perform perturba…
Fermion dispersion renormalization in a two-dimensional semi-Dirac semimetal
Hao-Fu Zhu, Xiao-Yin Pan, Guo-Zhu Liu
We present a non-perturbative study of the quantum many-body effects caused by the long-range Coulomb interaction in a two-dimensional semi-Dirac semimetal. This kind of semimetal…
Nonperturbative Dyson-Schwinger equation approach to strongly interacting Dirac fermion systems
Xiao-Yin Pan, Zhao-Kun Yang, Xin Li +1
Studying the strong correlation effects in interacting Dirac fermion systems is one of the most challenging problems in modern condensed matter physics. The long-range Coulomb inte…
Phase transition with trivial quantum criticality in anisotropic Weyl semimetal
Xin Li, Jing-Rong Wang, Guo-Zhu Liu
When a metal undergoes continuous quantum phase transition, the correlation length diverges at the critical point and the quantum fluctuation of order parameter behaves as a gaples…