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Fischler–Susskind Mechanism
The Fischler–Susskind mechanism, first proposed by Willy Fischler and Leonard Susskind in 1998, is a holographic prescription based on the particle horizon. The Fischler–Susskind prescription is used to obtain the maximum number of degrees of freedom per Planck volume at the Planck era The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with ..., compatible with the holographic principle. References Physical cosmology {{physical-cosmology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willy Fischler
Willy Fischler (born 1949 in Antwerp, Belgium) is a theoretical physicist. He is the Jane and Roland Blumberg Centennial Professor of Physics at the University of Texas at Austin, where he is affiliated with the Weinberg theory group. He is also a certified Flight Paramedic (FP-C) and was a Licensed Paramedic with Marble Falls Area EMS and a volunteer EMT with the Westlake Fire Department. His contributions to physics include: * Early computation of the force between heavy quarks. * The DFSZ (Dine-Fischler-Srednicki-Zhitnisky) model, as a solution to the strong CP problem. * The cosmological effects of the invisible axion (with Michael Dine) and its role as a candidate for dark matter. * Pioneering work (with Michael Dine and Mark Srednicki) on the use of supersymmetry to solve outstanding problems in the standard model of particle physics. * The first formulation of what became known as the "moduli problem in cosmology" (with G.D. Coughlan, Edward Kolb, Stuart Raby and Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Susskind
Leonard Susskind (; born June 16, 1940)his 60th birthday was celebrated with a special symposium at Stanford University.in Geoffrey West's introduction, he gives Suskind's current age as 74 and says his birthday was recent. is an American physicist, who is a professor of theoretical physics at Stanford University, and founding director of the Stanford Institute for Theoretical Physics. His research interests include string theory, quantum field theory, quantum statistical mechanics and quantum cosmology. He is a member of the US National Academy of Sciences, and the American Academy of Arts and Sciences, an associate member of the faculty of Canada's Perimeter Institute for Theoretical Physics, and a distinguished professor of the Korea Institute for Advanced Study. Susskind is widely regarded as one of the fathers of string theory. He was the first to give a precise string-theoretic interpretation of the holographic principle in 1995 and the first to introduce the idea of the stri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Particle Horizon
The particle horizon (also called the cosmological horizon, the comoving horizon (in Dodelson's text), or the cosmic light horizon) is the maximum distance from which light from particles could have traveled to the observer in the age of the universe. Much like the concept of a terrestrial horizon, it represents the boundary between the observable and the unobservable regions of the universe, so its distance at the present epoch defines the size of the observable universe. Due to the expansion of the universe, it is not simply the age of the universe times the speed of light (approximately 13.8 billion light-years), but rather the speed of light times the conformal time. The existence, properties, and significance of a cosmological horizon depend on the particular cosmological model. Conformal time and the particle horizon In terms of comoving distance, the particle horizon is equal to the conformal time \eta that has passed since the Big Bang, times the speed of light c. In genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
