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quant-ph2020★ 12 cited
Does causal dynamics imply local interactions?
Zoltán Zimborás, Terry Farrelly, Szilárd Farkas +1
We consider quantum systems with causal dynamics in discrete spacetimes, also known as quantum cellular automata (QCA). Due to time-discreteness this type of dynamics is not charac…
quant-ph2000★ 1 cited
Poincaré covariance of relativistic quantum position
Sz. Farkas, Z. Kurucz, M. Weiner
A great number of problems of relativistic position in quantum mechanics are due to the use of coordinates which are not inherent objects of spacetime, cause unnecessary complicati…