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Showing 2005 · quant-phShow all
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quant-ph2005★ 33 cited
Maps for Lorentz transformations of spin
Thomas F. Jordan, Anil Shaji, E. C. G. Sudarshan
Lorentz transformations of spin density matrices for a particle with positive mass and spin 1/2 are described by maps of the kind used in open quantum dynamics. They show how the L…
quant-ph2005★ 43 cited
Assumptions that imply quantum dynamics is linear
Thomas F. Jordan
A basic linearity of quantum dynamics, that density matrices are mapped linearly to density matrices, is proved very simply for a system that does not interact with anything else.…
quant-ph2005★ 19 cited
Mapping the Schrodinger picture of open quantum dynamics
Thomas F. Jordan, Anil Shaji, E. C. G. Sudarshan
For systems described by finite matrices, an affine form is developed for the maps that describe evolution of density matrices for a quantum system that interacts with another. Thi…