Verch, R. (2024). Quantum non-causality in spacetime may be not exclusively quantum. Perimeter Institute for Theoretical Physics. https://pirsa.org/24090093
MLA
Verch, Rainer. Quantum non-causality in spacetime may be not exclusively quantum. Perimeter Institute for Theoretical Physics, Sep. 19, 2024, https://pirsa.org/24090093
BibTex
@misc{ scivideos_PIRSA:24090093,
doi = {10.48660/24090093},
url = {https://pirsa.org/24090093},
author = {Verch, Rainer},
keywords = {Quantum Foundations, Quantum Information},
language = {en},
title = {Quantum non-causality in spacetime may be not exclusively quantum},
publisher = {Perimeter Institute for Theoretical Physics},
year = {2024},
month = {sep},
note = {PIRSA:24090093 see, \url{https://scivideos.org/pirsa/24090093}}
}
There are several non-causal effects that have been attributed to quantum physics. These include the analogues of "closed timelike curve effects" in quantum circuits proposed by David Deutsch (D-CTC), and the "impossible measurements" in relativistic quantum field theory discussed by Raphael Sorkin. Based on previous work, it will be pointed out in the talk that the alleged non-causality features arise not only in quantum systems, but in the very same manner in systems that are described in the framework of classical (non-quantum) statistical mechanics or classical field theory. Therefore, although the said non-causality scenarios have been portrayed as pertaining to quantum systems or quantum fields, they are in fact not based on, nor characteristic of, the quantum nature of physical systems.