The relationship between quantum mechanics and classical physics has baffled scientists for decades. In the quantum world, ...

with the local-density approximaion (LDA), a very successful method for approximately reducing the full many-electron problem to an effective one-particle Schrodinger's equation. The DFT ...

Specific problems that I have addressed are: the development of the Inverse Scattering Transform (IST) as a tool to solve the initial-value problem for scalar, vector and matrix continuous and ...

There are two equivalent methods, Schrödinger and Heisenberg pictures, where the time evolution can be obtained by the time-dependent Schrödinger equation and Heisenberg equation of motion, ...