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Images of TimeMind, Science, Reality$
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George Jaroszkiewicz

Print publication date: 2016

Print ISBN-13: 9780198718062

Published to Oxford Scholarship Online: January 2016

DOI: 10.1093/acprof:oso/9780198718062.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 17 April 2021

Time travel

Time travel

(p.214) 20 Time travel
Images of Time

George Jaroszkiewicz

Oxford University Press

This chapter discusses the relationship of information flow to time travel. The issues with retarded and anticipatory equations of motion are reviewed, with commentary on prediction and retrodiction. The chapter discusses tachyons and spreadsheet mechanics. The latter gives a simple, effective, and accessible formalism that can be readily used by the general reader to explore not only the relationship of light-cone structure in relativity to differential equations, but also the paradoxes associated with time travel. It discusses the famous Gödel metric in general relativity, looking at its physical and geometrical characteristics, notably the occurrence of closed timelike curves, or loops in time.

Keywords:   time travel, information flow, retarded equations, anticipatory equations, prediction, retrodiction, tachyons, spreadsheet mechanics, Gödel metric, closed timelike curves

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