![]() ![]() ![]() ![]() Historically been the most controversial. Level III: In unitary quantum mechanics, other branches of the wavefunctionĪdd nothing qualitatively new, which is ironic given that this level has Level II: In chaotic inflation, other thermalized regions may have differentĮffective physical constants, dimensionality and particle content. Identical copy of you about 10^ meters away. Which contains Hubble volumes realizing all initial conditions - including an It explains how physicists have been able to extrapolate the 14-billion-year history of our observable universe, leading to the conclusion that the universe began with the Big Bang. ![]() First, the book takes a cosmological perspective, delving into the history of our universe. Level I: A generic prediction of inflation is an infinite ergodic universe, Tegmark’s book starts by exploring reality from various angles. I explore physics implications of the External Reality Hypothesis (ERH) that there exists an external physical reality completely independent of us humans. Download a PDF of the paper titled Parallel Universes, by Max Tegmark (Penn) Download PDF Abstract: I survey physics theories involving parallel universes, which form a naturalįour-level hierarchy of multiverses allowing progressively greater diversity. ![]()
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