Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime

Dutton. Sept. 2019. 368p. ISBN 9781524743017. $29; ebk. ISBN 9781524743024. SCI
Caltech theoretical physicist Carroll (The Big Picture) wants readers to know that the current understanding of reality is wrong, arguing that the Multi Worlds theory related to quantum reality is the correct view to perceive the universe. The author begins with a statement that many physicists believe they fully understand the universe based on ideas developed in 1927, but that they only understand a piece of the bigger picture. After a brief historical overview of the development of quantum physics, Carroll spends the remainder of the book explaining that every time an event is observed, reality splits into different branches. This is ultimately the Multi Worlds idea: that each observation or event causes a duplicate reality to form where that observation or event did not occur. Carroll uses some equations to prove his concepts and describes them clearly. Readers unfamiliar with quantum physics may have difficulty grasping the concepts, but after some rereading of more advanced ideas (such as the wave function), they should begin to understand the hypotheses provided.
VERDICT Fans of popular science authors such as Neil deGrasse Tyson and John Gribbin will find great joy while exploring these groundbreaking concepts. [See Prepub Alert, 3/4/19.]

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