Contact Info
Department of Applied Mathematics
University of Waterloo
Waterloo, Ontario
Canada N2L 3G1
Phone: 519-888-4567, ext. 32700
Fax: 519-746-4319
PDF files require Adobe Acrobat Reader
Zoom: please contact amgrad@uwaterloo for the meeting link
Maria Papageorgiou | University of Waterloo
Seminar 3: Detector models in Quantum Field Theory: frictions with relativistic causality
Please note: this is apart of a seminar series
Unruh DeWitt-type detectors are typically defined as controllable non-relativistic systems that are locally coupled to a quantum field. Due to the non-relativistic character of the detector, it is not guaranteed that the model is compatible with relativistic causality. In this seminar I will analyze potential causality violations in Unruh DeWitt-type detector models, that are commonly used in the field of Relativistic Quantum Information. First, I will explain the relation between faster-than-light signaling and the causal factorization of the dynamics for multiple detector-field interactions. Then, I will demonstrate how spatially extended non-relativistic detector models predict superluminal propagation of the field's initial conditions. Based on this, I will discuss the validity of measurements in Quantum Field Theory when performed with non-relativistic detectors (e.g. qubits).
Contact Info
Department of Applied Mathematics
University of Waterloo
Waterloo, Ontario
Canada N2L 3G1
Phone: 519-888-4567, ext. 32700
Fax: 519-746-4319
PDF files require Adobe Acrobat Reader
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