Physical Review A
Internal structure of the Heisenberg and Robertson-Schrödinger uncertainty relations: Multidimensional generalization
Lubomír Skála
Abstract
It is known that the Heisenberg and Robertson-Schr\"odinger uncertainty relations can be replaced by sharper relations in which the ``classical'' (depending on the gradient of the phase of the wave function) and ``quantum'' (depending on the gradient of the envelope of the wave function) parts of the variances $\ensuremath{\langle}{(\ensuremath{\Delta}x)}^{2}\ensuremath{\rangle}$ and $\ensuremath{\langle}{(\ensuremath{\Delta}p)}^{2}\ensuremath{\rangle}$ are separated. In this paper, multidimensional generalization of these relations is discussed.