83 citations · 395 across the 22 of their papers we have counts for
4 papers · 1 filter
Sudden jumps and plateaus in the quench dynamics of a Bloch state
J. M. Zhang, Hua-Tong Yang
We take a one-dimensional tight binding chain with periodic boundary condition and put a particle in an arbitrary Bloch state, then quench it by suddenly changing the potential of…
Fermi's golden rule: its derivation and breakdown by an ideal model
J. M. Zhang, Y. Liu
Fermi's golden rule is of great importance in quantum dynamics. However, in many textbooks on quantum mechanics, its contents and limitations are obscured by the approximations and…
Concise configuration interaction expansions for three fermions in six orbitals
Alex D. Gottlieb, Norbert J. Mauser, J. M. Zhang
The Hilbert space for three fermions in six orbitals, lately dubbed the "Borland-Dennis setting," is a proving ground for insights into electronic structure. Borland and Dennis dis…
Cusps in the quench dynamics of a Bloch state
J. M. Zhang, Hua-Tong Yang
We report some nonsmooth dynamics of a Bloch state in a one-dimensional tight binding model with the periodic boundary condition. After a sudden change of the potential of an arbit…