Slow-roll inflation wikipedia
Webb16 juli 2024 · Download PDF Abstract: A study of the slow-roll inflation for an exponential potential in the frame of the scalar-tensor theory is performed, where non-minimal kinetic coupling to curvature and non-minimal coupling of the scalar field to the Gauss-Bonnet invariant are considered. Different models were considered with couplings given by … Webb20 apr. 2016 · The slow roll approximation simplifies the equations of motion and guarantees that inflation will occur. However, as the text you have quoted states, it is also possible to have inflation without resorting to the slow roll approximation. Share Cite Improve this answer Follow edited Apr 20, 2016 at 16:42 answered Apr 19, 2016 at 18:36
Slow-roll inflation wikipedia
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Webb1 jan. 2024 · Slow-roll inflation in general relativity The classical theory of General Relativity (GR), developed by Einstein [24]has been the most accurate model to study the gravitational interaction, and it has been experimentally verified several times. WebbIn new inflation, the slow-roll conditions must be satisfied for inflation to occur. The slow-roll conditions say that the inflaton potential must be flat (compared to the large vacuum …
Webb5 jan. 2024 · The ultra-slow-roll (USR) inflation represents a class of single-field models with sharp deceleration of the rolling dynamics on small scales, leading to a significantly … Webbslow-roll parameters, see, e.g., [13] for a detailed review. So far, various models achieve these aims by designing a short phase of inflationary nonattractor evolution. In one class of models, the first slow-roll parameter ϵ1 ¼ −H=H_ 2 remains small, while the absolute value of the second slow-roll parameter ϵ2 ¼ ϵ_1=ðHϵ1Þ is large ...
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Webb4 aug. 1994 · The meaning of the inflationary slow-roll approximation is formalised. Comparisons are made between an approach based on the Hamilton-Jacobi equations, … fibber mcgee and molly imagesWebb23 apr. 2024 · We investigate slow-roll inflation in a multi-field random Gaussian landscape. The landscape is assumed to be small-field, with a correlation length much smaller than the Planck scale. Inflation then… Expand 19 PDF View 8 excerpts, cites methods and background Inflation in random landscapes with two energy scales deputy chief minister of rajasthanWebbThe next generation of cosmological observations will be sensitive to small deviations from a pure power law in the primordial power spectrum of the curvature perturbations. In the context of slow-roll inflation, these… fibber mcgee and molly internet archive 1940Webb5 apr. 2024 · The slow-roll conditions are conditions on the parameters and the initial conditions for the fields. Imposing also the number of e-folds, usually results in conditions on the parameters only. V=ge^ {-\lambda \phi } gives an exact solution for inflation, on … fibber mcgee and molly closetWebbwith his “chaotic inflation” model [8]. This model still used a slow-roll potential, but did not require any particular level of pre-inflation energy density uniformity. Subsequent research has led to inflation becoming generally accepted as the strongest current candidate which offers solutions to the cosmological puzzles. fibber mcgee and molly videoIt defines a realm like the one that contains the observable universe as only one of many inflationary zones. Astrophysicist Jean-Luc Lehners, of the Princeton Center for Theoretical Science, has argued that an inflationary universe does produce pockets. In his 2012 journal, Lehners wrote about how pocket universes can emerge as a result of eternal inflation. The mechanisms of inflation within … deputy chief minister of penangWebb11 mars 2024 · It then rolls very slowly along the potential. This is the slow-roll approximation and has been recognized as a practical way to realize inflation. In this … fibber mcgee and molly youtube