We review variational and quantum Monte Carlo approaches based on (extended) Lang-Firsov transformations of the Hamiltonian. Derivations for one, two and many electrons are given, and results for the Holstein polaron, the Holstein-Hubbard bipolaron, and the spinless Holstein model at finite carrier densities are presented.
|Title of host publication||Polarons in Advanced Materials|
|Publication status||Published - 2007|
|Name||Springer Series in Advanced Materials|