2 papers
cond-mat.mes-hall2021
A effective Hamiltonian generator
Yi Jiang, Zhong Fang, Chen Fang
effective Hamiltonian is important for theoretical analysis in condensed matter physics. Based on the 'kdotp-symmetry' package, we develop an upgraded package named 'kdo…
cond-mat.str-el2020
Quasi-symmetry groups and many-body scar dynamics
Jie Ren, Chenguang Liang, Chen Fang
In quantum systems, a subspace spanned by degenerate eigenvectors of the Hamiltonian may have higher symmetries than those of the Hamiltonian itself. When this enhanced-symmetry gr…