Description
The polynomially filtered exact diagonalization (POLFED) appeared (2020, Sierant) as an efficient method to extract eigenstates and eigenvalues at the middle of the spectrum for system sizes beyond exact diagonalization. The shift-and-invert method already provided those features but because of the filling-in phenomena can not reach as large system sizes as one would want. POLFED enables us to study ergodicity-breaking transitions in larger system sizes.
References
https://doi.org/10.1103/PhysRevLett.125.156601
Primary author
Rok Pintar
(GNOI)
