Slow-roll inflation wikipedia
Webb14 aug. 2015 · Large Slow Roll Parameters in Single Field Inflation Jessica L. Cook, Lawrence M. Krauss We initially consider two simple situations where inflationary slow … Webb8 okt. 2024 · Slow-roll inflation in f (R,T) gravity and a modified Starobinsky-like inflationary model Mauricio Gamonal In this work, we studied the slow-roll …
Slow-roll inflation wikipedia
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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 … Webb3 nov. 2024 · Slow roll inflation Cosmic inflation was a period of extremly high dark energy density in the early universe (and almost no "ordinary" mass/energy), so high that any normal piece of matter today, or even a neutron star, …
WebbPresidency of Joe Biden January 20, 2024 – present Cabinet See list Party Democratic Election 2024 Seat White House ← Donald Trump Seal of the President Official website This article is part of a series about Joe Biden Political positions Electoral history Early life and career Eponyms Family Honors Public image U.S. Senator from Delaware Judiciary … Webb8 dec. 2024 · In order to produce an accelerating expansion (desirable for inflation and dark energy models) using a scalar field, that field must be slowly rolling. The two slow-roll parameters are defined as ϵ = 1 κ 2 ( V, ϕ V) 2, η = V, ϕ ϕ κ 2 ϕ, where κ = 8 π G, ϕ is the scalar field and V its potential.
Webb22 okt. 2024 · Abstract: Slow-roll inflation is analyzed in the context of modified gravity within the Palatini formalism. As shown in the literature, inflation in this framework … The basic model of inflation proceeds in three phases: • Expanding vacuum state with high potential energy • Phase transition to true vacuum • Slow roll and reheating
Webb10 dec. 2024 · Ultra-slow-roll (USR) inflation is a new mode of inflation which corresponds to the occasions when the inflaton field must traverse an extremely flat part of the scalar potential, when the usual slow-roll (SR) fails. We investigate USR and obtain an estimate for how long it lasts, given the initial kinetic density of the inflaton.
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 … business lines of credit with no pgWebbIn 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 … handy siemens a50It 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 … handy signatur abgelaufen was tunWebb22 jan. 2013 · Ultra slow-roll inflation has recently been used to challenge the non-Gaussianity consistency relation. We show that this inflationary scenario belongs to a one-parameter class of models, and we study its properties and observational predictions. We demonstrate that the power spectrum remains scale invariant and that the bispectrum is … business line to consumer line attWebb18 juli 2024 · Ultra-slow-roll (USR) inflation is a new mode of inflation which corresponds to the occasions when the inflaton field must traverse an extremely flat part of the scalar … business linguahouseWebb1 nov. 2012 · Abstract: Ultra slow-roll inflation has recently been used to challenge the non-Gaussianity consistency relation. We show that this inflationary scenario belongs to … handy signatur aktivierung woWebbMed inflation menas vanligtvis att penningvärdet minskar. Den ursprungliga definitionen är "ökning av penningmängden [ 1] ". När penningmängden ökar kraftigt så minskar i regel penningvärdet. En effekt av inflation är att den allmänna prisnivån stiger, varför inflation ofta mäts med konsumentprisindex och uppfattas av många som ... business lingo