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Title: Inflationary Cosmology: Is Our Universe Part of a Multiverse

In 1981, Guth proposed the theory of the inflationary universe, a modification of the Big Bang theory, which is generally accepted by scientists to explain how the universe began. Nevertheless, the Bimore »g Bang theory leaves some questions, and the theory of inflation attempts to answer them. Guth states that a repulsive gravitational force generated by an exotic form of matter brought about the expansion of the universe. He postulates that the universe underwent an expansion of astronomical proportions within the first trillionth of a second of its existence, during which the seeds for its large-scale structure were generated. Guth and colleagues have further explored the possibility of mimicking inflation in a hypothetical laboratory, thereby creating a new universe, and they concluded that it might be theoretically possible. If it happened, the new universe would not endanger our own universe. Instead, it would slip through a wormhole, a hypothetical space-time travel shortcut, and rapidly disconnect from our universe. In this talk, Guth will explain the inflationary theory and review the features that make it scientifically plausible. In addition, he will discuss the biggest mystery in cosmology: Why is the value of the cosmological constant, sometimes called the "anti-gravity" effect, so remarkably small compared to theoretical expectations? Guth will explain how the inflationary theory, combined with other ideas from elementary particle physics and cosmology, can provide a possible explanation for this discrepancy.« less
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Title: Inflationary Cosmology: Is Our Universe Part of a Multiverse
Authors:
Publication Date: 2008-11-06
OSTI Identifier: 1007963
DOE Contract Number: AC02-98CH10886
Other Number(s): TRN: US1104109
Resource Type: Multimedia
Resource Relation: Conference: Brookhaven Science Associates' Distinguished Lecture Series, Brookhaven National Laboratory, Upton, New York (United States), presented on November 06, 2008
Research Org: BNL (Brookhaven National Laboratory (BNL), Upton, NY (United States))
Sponsoring Org: USDOE Office of Science (SC); Brookhaven Science Associates (BSA)
Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; BNL ; COSMOLOGICAL CONSTANT ; COSMOLOGY ; ELEMENTARY PARTICLES ; INFLATIONARY UNIVERSE ; MODIFICATIONS ; PHYSICS ; SEEDS ; SLIP ; SPACE-TIME ; UNIVERSE
Country of Publication: United States
Language: English
Run Time: 1:17:58
System Entry Date: 2016-01-27