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hep-th2003
Newton-Hooke spacetimes, Hpp-waves and the cosmological constant
G. W. Gibbons, C. E. Patricot
We show explicitly how the Newton-Hooke groups act as symmetries of the equations of motion of non-relativistic cosmological models with a cosmological constant. We give the action…
quant-ph2003
On Quantum Operations as Quantum States
Pablo Arrighi, Christophe Patricot
We formalize the correspondence between quantum states and quantum operations isometrically, and harness its consequences. This correspondence was already implicit in the various p…
quant-ph2003
The Conal representation of Quantum States and Non Trace-Preserving Quantum Operations
Pablo Arrighi, Christophe Patricot
We represent generalized density matrices of a -complex dimensional quantum system as a subcone of a real pointed cone of revolution in , or indeed a Minkowski…