Search results
Results from the WOW.Com Content Network
The Borde–Guth–Vilenkin (BGV) theorem is a theorem in physical cosmology which deduces that any universe that has, on average, been expanding throughout its history cannot be infinite in the past but must have a past spacetime boundary. [1]
The Borde–Guth–Vilenkin theorem, according to which any universe that has, on average, been expanding throughout its history cannot have been expanding indefinitely but must have had a past boundary at which inflation began. [45] Professor Alexander Vilenkin, one of the authors of the Borde–Guth–Vilenkin theorem, writes: [46]
In 1982, Paul Steinhardt presented the first model of eternal inflation, Vilenkin showed that eternal inflation is generic. [9] Furthermore, working with Arvind Borde and Alan Guth, he developed the Borde–Guth–Vilenkin theorem, showing that a period of inflation must have a beginning and that a period of time must precede it. [10]
Bohr–Van Leeuwen theorem; Borde–Guth–Vilenkin theorem; Buckingham π theorem; C. Carnot's theorem (thermodynamics) Castigliano's method; Chung–Fuchs theorem;
Guth proposed inflation in January 1981 to explain the nonexistence of magnetic monopoles; [51] [52] it was Guth who coined the term "inflation". [53] At the same time, Starobinsky argued that quantum corrections to gravity would replace the supposed initial singularity of the Universe with an exponentially expanding de Sitter phase. [ 54 ]
Alan Harvey Guth (/ ɡ uː θ /; born February 27, 1947) is an American theoretical physicist and cosmologist who is the Victor Weisskopf Professor of Physics at the Massachusetts Institute of Technology.
1 Vilenkin sources. 1 comment. ... 3 Plain English. 1 comment. 4 New arxiv. 2 comments. Toggle the table of contents. Talk: Borde–Guth–Vilenkin theorem. Add ...
Physicists Piet Hut and Mark Alford have suggested that the idea is incompatible with Gödel's first incompleteness theorem. Tegmark replies that not only is the universe mathematical, but it is also computable. In 2014, Tegmark published a popular science book about the topic, titled Our Mathematical Universe.