26 citations · 119 across the 23 of their papers we have counts for
23 papers
Lorentz-Covariant Spin Operator for Spin 1/2 Massive Fields As a Physical Observable
Taeseung Choi, Yeong Deok Han
We derive a relativistic-covariant spin operator for massive case directly from space-time symmetry in Minkowski space-time and investigate the physical properties of a derived spi…
Proper relativistic position operators in 1+1 and 2+1 dimensions
Taeseung Choi
We have revisited the Dirac theory in 1+1 and 2+1 dimensions by using the covariant representation of the parity-extended Poincaré group in their native dimensions. The parity oper…
Singularity of relativistic vortex beam and proper relativistic observables
Yeong Deok Han, Taeseung Choi, Sam Young Cho
We have studied the phase singularity of the relativistic vortex beams for the two sets of relativistic operators. One includes the new spin and orbital angular momentum (OAM) oper…
Spin operators and representations of the Poincaré group
Taeseung Choi, Sam Young Cho
We present the rigorous derivation of covariant spin operators from a general linear combination of the components of the Pauli-Lubanski vector. It is shown that only two spin oper…
Classical understanding of the electron vortex beams in a uniform magnetic field
Yeong Deok Han, Taeseung Choi
Recently interesting observations on electron vortex beams, which have angular momentum about the center of the vortex beams, have been made. We have shown that the basic features…
Newton-Wigner position operator and its corresponding spin operator in relativistic quantum mechanics
Taeseung Choi
A relativistic spin operator is to be the difference between the total and orbital angular momentum. As the unique position operator for a localized state, the remarkable Newton-Wi…