3 papers
cond-mat.str-el2019
Ferromagnetic spin correlations in the two-dimensional Hubbard model
Philipp Werner, Xi Chen, Emanuel Gull
We analyze the dynamical nearest-neighbor and next-nearest-neighbor spin correlations in the 4-site and 8-site dynamical cluster approximation to the two-dimensional Hubbard model.…
cond-mat.str-el2019
Dynamical Charge Susceptibility in the Hubbard Model
Xinyang Dong, Xi Chen, Emanuel Gull
We compute the dynamical charge susceptibility in the two-dimensional Hubbard model within the dynamical cluster approximation. In order to understand the connection between charge…
cond-mat.str-el2019
Magnetic Susceptibility and Simulated Neutron Signal in the 2D Hubbard Model
J. P. F. LeBlanc, Shaozhi Li, Xi Chen +4
We compute dynamic spin susceptibilities in the two-dimensional Hubbard model using the method of Dual Fermions and provide comparison to lattice Monte Carlo and cluster dynamical…