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quant-ph2026
A groupoidal approach to quantum reference frames
Samuel Fedida, Alberto Ibort, Arnau Mas-Dorca
We develop the kinematical and operator-algebraic foundations of a groupoid-based relational quantum field theory (RQFT) on curved spacetimes. Indeed, the usual group-based quantum…
quant-ph2026
Schwarz maps with symmetry
Alfonso GarcÃa-Velo, Alberto Ibort
The theory of symmetry of quantum mechanical systems is applied to study the structure and properties of several classes of relevant maps in quantum information theory: CPTP, PPT a…