9 citations · 17 across the 2 of their papers we have counts for
2 papers
hep-th2008★ 9 cited
Non-hermitian radial momentum operator and path integrals in polar coordinates
Kazuo Fujikawa
A salient feature of the Schrödinger equation is that the classical radial momentum term in polar coordinates is replaced by the operator $\hat{P}^{\dagger}_{r} \hat{P}…
quant-ph2007★ 8 cited
Adiabatic approximation in the second quantized formulation
Kazuo Fujikawa
Recently there have been some controversies about the criterion of the adiabatic approximation. It is shown that an approximate diagonalization of the effective Hamiltonian in the…