Omniverse (Set theory)
different from: Metaverse
different from: MultiVersus
label: Parallel Universes (nonfiction)
label: Multimesta @in
label: Multuniverso @eo
label: Multiverse
label: 多重宇宙論 @zh
label: Multiversum @de
label: Multivers @ca
label: 다중 우주론 @ko
label: تعدد الأكوان @ar
label: Мультивселенная @ru
label: An Ilchruinne @ga
label: Πολυσύμπαν @el
label: Multiverso @es
label: Мультивсесвіт @uk
label: Mnohovesmír @cs
label: Multibertso @eu
label: Multiverso (ciência) @pt
label: 多元宇宙論 @ja
label: Wieloświat @pl
subject: Category:Hypothetical astronomical objects
subject: Category:Quantum mechanics
subject: Category:Physical cosmology
subject: Category:Science fiction genres
subject: Category:Multiverse
subject: Category:Science fiction themes
subject: Category:Anthropic principle
subject: Category:1890s neologisms
subject: Category:Astronomical hypotheses
author: George Ellis
author: Max Tegmark
author: Ranga-Ram Chary
author: Paul Davies
source: Scientific American
source: The New York Times
text: As skeptical as I am, I think the contemplation of the multiverse is an excellent opportunity to reflect on the nature of science and on the ultimate nature of existence: why we are here. In looking at this concept, we need an open mind, though not too open. It is a delicate path to tread. Parallel universes may or may not exist; the case is unproved. We are going to have to live with that uncertainty. Nothing is wrong with scientifically based philosophical speculation, which is what multiverse proposals are. But we should name it for what it is.
text: For a start, how is the existence of the other universes to be tested? To be sure, all cosmologists accept that there are some regions of the universe that lie beyond the reach of our telescopes, but somewhere on the slippery slope between that and the idea that there is an infinite number of universes, credibility reaches a limit. As one slips down that slope, more and more must be accepted on faith, and less and less is open to scientific verification. Extreme multiverse explanations are therefore reminiscent of theological discussions. Indeed, invoking an infinity of unseen universes to explain the unusual features of the one we do see is just as ad hoc as invoking an unseen Creator. The multiverse theory may be dressed up in scientific language, but in essence, it requires the same leap of faith.
text: Many other regions beyond our observable universe would exist with each such region governed by a different set of physical parameters than the ones we have measured for our universe.
text: [A]n entire ensemble is often much simpler than one of its members. This principle can be stated more formally using the notion of algorithmic information content. The algorithmic information content in a number is, roughly speaking, the length of the shortest computer program that will produce that number as output. For example, consider the set of all integers. Which is simpler, the whole set or just one number? Naively, you might think that a single number is simpler, but the entire set can be generated by quite a trivial computer program, whereas a single number can be hugely long. Therefore, the whole set is actually simpler... , the higher-level multiverses are simpler. Going from our universe to the Level I multiverse eliminates the need to specify initial conditions, upgrading to Level II eliminates the need to specify physical constants, and the Level IV multiverse eliminates the need to specify anything at all... A common feature of all four multiverse levels is that the simplest and arguably most elegant theory involves parallel universes by default. To deny the existence of those universes, one needs to complicate the theory by adding experimentally unsupported processes and ad hoc postulates: finite space, wave function collapse and ontological asymmetry. Our judgment therefore comes down to which we find more wasteful and inelegant: many worlds or many words. Perhaps we will gradually get used to the weird ways of our cosmos and find its strangeness to be part of its charm.
text: Unusual claims like evidence for alternate universes require a very high burden of proof.
description: বহুবিশ্ব হৈছে কেইবাখনো ব্ৰহ্মাণ্ডৰ এক প্ৰাকল্পিক নাইবা অনুমানভিত্তিক গোট । @as
description: feltételezett világ vagy univerzum, ami az általunk ismert világegyetemen kívül található @hu
description: kelompok hipotetikal dari beberapa alam semesta @in
description: гипотетическое множество всех возможных реально существующих вселенных, одной из которого является наша вселенная @ru
description: unibertso guztiak barneratzen dituen multzoa @eu
description: فرضیه‌ای در مورد وجود چندین جهان در عالم هستی @fa
description: grup ipotetic de universuri multiple @ro
description: 여러 우주들의 가설상의 그룹인 다중우주에 관한 이론 @ko
description: hypothetische Gruppe mehrerer Paralleluniversen @de
description: en samling hypotetiske eller faktiske universer @da
description: grupo hipotético de múltiplos universos @pt
description: grupo hipotético en conjunto de todos los universos @es
description: קבוצה תיאורטית של יקומים מרובים @iw
description: hypotetická skupina viacerých vesmírov @sk
description: ทฤษฎีของการมีอยู่ของหลายเอกภพ @th
description: अनेक ब्रह्माण्डों का काल्पनिक समूह @hi
description: σύνολο από υποθετικά ή υπαρκτά σύμπαντα, που μαζί αποτελούν τα πάντα που υπάρχουν @el
description: världsbild med många eller oändligt med universum @sv
description: barcha mumkin bo'lgan real hayot olamlarining faraziy to'plami, ulardan biri bizning koinotimizdir @uz
description: hipotetična skupina več vesolj @sl
description: insieme ipotetico di universi @it
description: ensemble hypothétique de nombreux univers parallèles @fr
description: نظرية فيزيائية ترمي إلى تثبيت مفهوم وجود أكوان أخرى غير كوننا @ar
description: grupp ipotetiku ta' universi multipli @mt
description: hypothetical group of multiple universes
description: birbirinden farklı, gözlemlenebilir evrenlerin hipotezsel toplamı @tr
description: hypothetische groep van meerdere universa @nl
description: hipotetyczny zbiór wszelkich możliwych wszechświatów @pl
description: giả thiết về sự tồn tại song song các vũ trụ @vi
description: usean universumin kosmos @fi
wiki page external link: http://www.cs.berkeley.edu/~christos/classics/Deutsch_quantum_theory.pdf
wiki page external link: https://web.stanford.edu/~alinde/1032226.pdf
wiki page external link: http://www.bbc.com/earth/story/20160318-why-there-might-be-many-more-universes-besides-our-own
wiki page external link: http://www.bbc.co.uk/programmes/b008z744
wiki page external link: https://web.archive.org/web/20160309202304/http:/www.cs.berkeley.edu/~christos/classics/Deutsch_quantum_theory.pdf
wiki page external link: http://www.thoughtcast.org/
wiki page external link: http://thoughtcast.org/casts/the-end-of-our-universe-among-other-timely-topics