Time, the Arrow of Time, and Quantum Mechanics | Zendy

Gerard ’t Hooft | Zendy

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Time, the Arrow of Time, and Quantum Mechanics

Author(s) -

Gerard ’t Hooft

Publication year - 2018

Publication title -

frontiers in physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.754

H-Index - 31

ISSN - 2296-424X

DOI - 10.3389/fphy.2018.00081

Subject(s) - arrow of time , causality (physics) , interpretations of quantum mechanics , spacetime , locality , theoretical physics , arrow , interpretation (philosophy) , quantum , space time , hidden variable theory , classical physics , mathematics , calculus (dental) , computer science , quantum process , physics , quantum mechanics , quantum dynamics , linguistics , philosophy , chemical engineering , engineering , programming language , medicine , dentistry

It is brought forward that viable theories of the physical world that have no variable at all that can play the role of time, do not exist; some notion of time is one of the very first ingredients a candidate theory should possess. Almost by definition, time has an arrow. In contrast, time reversibility, or even the possibility to run the equations of motion backwards in time, is not at all a primary requirement. This means that the direction of the arrow of time may well be uniquely defined in the theory, even locally. We explain these statements in terms of the author's favoured deterministic cellular automaton interpretation of quantum mechanics, also to be referred to as `vector space analysis', and expand on these ideas.

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