منابع مشابه
Parallel Universes
I survey physics theories involving parallel universes, which form a natural four-level hierarchy of multiverses allowing progressively greater diversity. Level I: A generic prediction of inflation is an infinite ergodic universe, which contains Hubble volumes realizing all initial conditions — including an identical copy of you about 10 29 m away. Level II: In chaotic inflation, other thermali...
متن کاملParallel Universes
One of the niftiest things about quantum mechanics is that it allows, via quantum tunneling (described in the Quantum Notes and in the lecture), many seemingly impossible events to occur, like walking through a brick wall, surviving after getting shot in the face, and meeting the girl of your dreams. Continuing on the theme of “possibility,” these notes describe parallel universes, in which eve...
متن کاملFormal Universes
This essay addresses the concerns of the foundations of mathematics of the early 20th century which led to the creation of formally axiomatized universes. These are confronted with contemporary developments, particularly in computational logic and neuroscience. Our approach uses computational models of mental experiments with the infinite in set-theory and symbol-manipulation systems, in partic...
متن کاملComputational universes
Suspicions that the world might be some sort of a machine or algorithm existing “in the mind” of some symbolic number cruncher have lingered from antiquity. Although popular at times, the most radical forms of this idea never reached mainstream. Modern developments in physics and computer science have lent support to the thesis, but empirical evidence is needed before it can begin to replace ou...
متن کاملDistinguishing marks of simply-connected universes
A statistical quantity suitable for distinguishing simply-connected RobertsonWalker (RW) universes is introduced, and its explicit expressions for the three possible classes of simply-connected RW universes with an uniform distribution of matter are determined. Graphs of the distinguishing mark for each class of RW universes are presented and analyzed. There sprout from our results an improveme...
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ژورنال
عنوان ژورنال: Differential Geometry and its Applications
سال: 2019
ISSN: 0926-2245
DOI: 10.1016/j.difgeo.2019.05.008