{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-c03aa079.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-517835be.css\" media=\"all\" /\u003e\n\u003cdiv data-title='Eternal Inflation: A Leading Theory Behind the Multiverse' data-url='/boclips/videos/689566e28b3f8d9d4df8e32e' data-video-url='/boclips/videos/689566e28b3f8d9d4df8e32e' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nEternal Inflation: A Leading Theory Behind the Multiverse\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30356011\" href=\"/search?publisher_ids%5B%5D=30356011\"\u003eCurated Video\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003eSummary:The big bang model has some problems - homogeneity, flatness, and lack of magnetic monopoles. Cosmic Inflation occurred when the entire universe shortly after its beginning, expanded exponentially fast for a fraction of a second....\u003c/span\u003e\n\u003cspan class='full-description hide'\u003eSummary:\u003cbr/\u003eThe big bang model has some problems - homogeneity, flatness, and lack of magnetic monopoles. \u003cbr/\u003eCosmic Inflation occurred when the entire universe shortly after its beginning, expanded exponentially fast for a fraction of a second. One implication of this is that the universe on large scales may not be so homogenous. Inflation could have ended at different times in different places. This would mean that the universe is bigger and more complex than we realize. This concept is called ETERNAL inflation.\u003cbr/\u003e\u003cbr/\u003eInflation occurred due to the decay of the scalar inflation field. It decayed into other fields and particles. After this expansion, the universe kept expanding but at a much slower rate. The length of inflation can be calculated, but this only tells us how long it should last ON AVERAGE. \u003cbr/\u003e\u003cbr/\u003eBut quantum mechanics means there will be randomness. Inflation could last a bit longer or shorter than expected in different parts of the universe. This is analogous to radioactive decay where half life results in some atoms decaying and others not. We cannot predict which atoms will decay and which will not. Inflation may work similarly. \u003cbr/\u003e\u003cbr/\u003eLike the concept of half-life, quantum uncertainty may cause, half the volume of the expanded universe to stop inflating after a fraction of a second, but it could continue in the other half of the universe. The part where inflation stopped would be like a bubble universe. \u003cbr/\u003e\u003cbr/\u003eBut space continues expanding exponentially in the other half, and after another fraction of a second, a second bubble universe forms. Steinhardt, Linde and Vilenkin showed that if the if the decay of the inflation field happens slower than the rate of expansion of the universe, then inflation could go on forever, creating more and more bubble universes. \u003cbr/\u003e\u003cbr/\u003eUnlike radioactive decay, where all the material decays over time because no new material gets created, eternal inflation could go on forever because new space is being created all the time. \u003cbr/\u003e\u003cbr/\u003eIf the theory of eternal inflation is correct, we are inside one of these bubbles. What we think of as the start of the universe may be just the point at which inflation simply ended in our part of the universe. But what the universe is on much larger scales is an unimaginably vast multiverse of universes. \u003cbr/\u003e\u003cbr/\u003eWhat is the nature of these other universes? The fundamental laws of quantum mechanics should still apply, since inflation is derived from quantum mechanics. Most physicists think there is probably some universal laws of nature that describes the entirety of the multiverse.\u003cbr/\u003e\u003cbr/\u003eAre these universes the same as ours? There is nothing in the laws of physics that requires a universe to have the same laws as ours or same fundamental constants as ours. \u003cbr/\u003e\u003cbr/\u003eWe may never be able to directly detect these other universes because the space between them is expanding so fast that no communication at the speed of light could occur. But, wormholes may be able to connect universes. Understanding of high energy physics could give us some clues. Also background gravitational waves may tell us what happened at the beginning of the universe.\u003cbr/\u003e\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='action-container flex justify-between'\u003e\n\u003cbutton aria-expanded='false' aria-label='Read more description' class='rp-full-description' type='button'\u003e\n\u003ci class='fai fa-solid fa-align-left'\u003e\u003c/i\u003e\n\u003cspan id='read_more'\u003eRead More\u003c/span\u003e\n\u003c/button\u003e\n\u003cdiv class='rp-report'\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv aria-labelledby='resource-details-heading' class='rp-info-section'\u003e\n\u003ch2 class='title' id='resource-details-heading'\u003eResource Details\u003c/h2\u003e\n\u003cdiv class='rp-resource-details clearfix'\u003e\n\u003cdiv class='detail'\u003e\n\u003cdl\u003e\n\u003cdt\u003eCurator Rating\u003c/dt\u003e\n\u003cdd\u003e\u003cspan class=\"star-rating\" aria-label=\"4.0 out of 5 stars\" role=\"img\"\u003e\u003ci class=\"fa-solid fa-star 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