Benchmarking the simplest slave-particle theory with Hubbard dimer
Yang Wei-Wei1, Luo Hong-Gang1, 2, Zhong Yin1, †
The single-particle Green function G(t∼) with evolution of time in zero-temperature half-filling situation: exact diagonalization (red square) and the Z2 slave-spin MF method (green circle). The results are calculated with different U.
