Abstract
Theoretical achievements, as well as much controversy, surround multiverse theory. Various types of multiverses, with an increasing amount of complexity, were suggested and thoroughly discussed in literature by now. While these types are very different, they all share the same basic idea: our physical reality consists of more than just one universe. Each universe within a possibly huge multiverse might be slightly or even very different from the others. The quilted multiverse is one of these types, whose uniqueness arises from the postulate that every possible event will occur infinitely many times in infinitely many universes. In this paper we show that the quilted multiverse is not self-consistent due to the instability of entropy decrease under small perturbations. We therefore propose a modified version of the quilted multiverse which might overcome this shortcoming. It includes only those universes where the minimal entropy occurs at the same instant of (cosmological) time. Only these universes whose initial conditions are fine-tuned within a small phase-space region would evolve consistently to form their "close" states at present. A final boundary condition on the multiverse may further lower the amount of possible, consistent universes. Finally, some related observations regarding the many-worlds interpretation of quantum mechanics and the emergence of classicality are discussed.
Highlights
Multiverse theory is a group of models assuming that our physical reality encompasses more than one universe, i.e., there exists at least one more universe other than ours
Several types of such multiverses are known in literature [1,2,3,4,5,6,7,8,9,10,11,12]. Some of these models suggest that our physical reality comprises of infinitely many universes1, while others postulate that we live in a multiverse with a finite number of universes
We show that Equation (4) is not consistent with the thermodynamic arrow of time defined in section 2
Summary
Multiverse theory ( known as Meta universe theory) is a group of models assuming that our physical reality encompasses more than one universe, i.e., there exists at least one more universe other than ours. Several types of such multiverses are known in literature [1,2,3,4,5,6,7,8,9,10,11,12] Some of these models suggest that our physical reality comprises of infinitely many universes, while others postulate that we live in a multiverse with a finite number of universes. In Greene’s words [11]: “At any moment in time, the expanse of space contains an infinite number of separate realms-constituents of what I’ll call the Quilted Multiverse-with our observable universe, all we see in the vast night sky, being but one member.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
