Small field inflation

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August undefined, 2024

Webb16 dec. 2024 · We focus on the behaviours of small field of an arctangent potential form, in Randall–Sundrum II braneworld. Within this framework, there is only one brane with positive tension while the second membrane is sent to infinity, and the configuration the model allows to localize the gravity on the curvature of the bulk. In that context, we … Webb14 okt. 2015 · In this article, I have studied the cosmological and particle physics constraints on a generic class of large field ( Δϕ > M p ) and small field ( Δϕ < M p ) models of brane inflationary magnetic field from: (1) tensor-to-scalar ratio (r), (2) reheating, (3) leptogenesis and (4) baryogenesis in case of Randall-Sundrum single braneworld …

[2303.12561] On Inflationary Models in f(R,T) Gravity with a Kinetic …

WebbWe show that initial conditions for small-field inflation can be determined quantum mechanically by introducing a suitable flattened region in the scalar potential. The … Webb10 sep. 2024 · We revisit the renormalizable polynomial inflection point model of inflation, focusing on the small field scenario which can be treated fully analytically. In particular, the running of the spectral index is predicted to be α = -1.43 × 10-3 +5.56 × 10-5 (N CMB-65 ), which might be tested in future. dwayne johnson among us 3d print

[PDF] Initial conditions for slow-roll inflation in a random Gaussian ...

Webb25 aug. 2024 · Inflation in RS2 model generally predicts smaller scalar spectral indices and larger tensor-to-scalar ratios compared to standard inflation. However, large tensor-to … WebbOn the other hand, in small-field inflation, where the coarse graining of spacetime into causally connected patches is less refined, it becomes less probable for the right initial condition to be met and consequently for inflation to begin [7]. A realization of this is the overshoot problem in hilltop inflation (or in general, inflection point Webb12 feb. 2007 · New inflation yields a good fit to the r and n(s) data in a wide range of field and parameter space. Small field inflation yields r<0.16 while large field inflation yields r>0.16 (for N(e)=50). All members of the new inflation family predict a small but negative running -4(n+1) x 10-4<=dn(s)/dlnk<=-2 x 10-4. crystal falls higher love

Large and small field inflation from hyperbolic sigma models

Constraining brane inflationary magnetic field from cosmoparticle ...

WebbFör 1 dag sedan · Federal Reserve (Fed) officials appear on track to extend their run of interest-rate hikes when they meet next month, shrugging off their advisers’ warning of recession with a bet that they need ... Webb7 jan. 2024 · Within General Relativity, a minimally coupled scalar field governed by a quadratic potential is able to produce an accelerated expansion of the universe provided … crystal falls grotto poolWebb30 mars 2024 · It is shown that in this class of models the symmetry structure leads to both large and small field inflationary trajectories within a single modular inflation … crystal falls greenwood ns

"WebbWe consider ”new inflation” inflationary models at small fields, embedded in minimal N = 1 supergravity with a single chiral superfield. Imposing a period of inflation compati " - Small field inflation

Small field inflation

$Small field inflation in $$ \mathcal{N} $$ = 1 supergravity with a ...$

WebbA scalar field having the Coleman-Weinberg type effective potential arises in various contexts of particle physics and serves as a useful framework for discussing cosmic … Webb29 okt. 2024 · Large classes of standard single-field slow-roll inflationary models consistent with the required number of e-folds, the current bounds on the spectral index of scalar perturbations, the tensor-to-scalar ratio, and the scale of inflation can be efficiently constructed using genetic algorithms.

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Webb11 apr. 2024 · WASHINGTON, April 11 (Xinhua) -- March saw U.S. small business optimism fall for the 15th consecutive month, amid worries over record inflation and high interest rates. Webb1 juni 2024 · Since there is a growing interest in studying inflationary models that meet both observational data and Swampland Criteria, the main goal of the present work is to …

WebbFör 1 dag sedan · KUALA LUMPUR: Maybank Investment Bank (Maybank IB) has expanded its market coverage with the issuance of structured warrants over stocks listed on the New York Stock Exchange (NYSE), making it ... Webbför 2 dagar sedan · CHICAGO, April 12 (Xinhua) -- Gold futures on the COMEX division of the New York Mercantile Exchange rose Wednesday as U.S. inflation is smaller than expected.

Webb12 sep. 2016 · A bstract We consider “new inflation” inflationary models at small fields, embedded in minimal \mathcal {N} = 1 supergravity with a single chiral superfield. Imposing a period of inflation compatible with experiment severely restricts possible models, classified in perturbation theory. Webb11 aug. 2024 · It is shown that in this class of models the symmetry structure leads to both large and small field inflationary trajectories within a single modular inflation model. The …

WebbWe study an axion inflation model recently proposed within the framework of type IIB superstring theory, where we pay a particular attention to a sub-Planckian axion decay constant. Our axion potential can lead to the small field inflation with a small tensor-to-scalar ratio, and a typical reheating temperature can be as low as GeV.

Webb1 juni 2012 · We explore some issues in slow roll inflation in situations where field excursions are small compared to M {sub p}. We argue that for small field inflation, minimizing fine tuning requires low energy supersymmetry and a tightly constrained structure. Hybrid inflation is almost an inevitable outcome. crystal falls golf leander txWebb6 aug. 2024 · In this work, we perform this integration and we show that there is a region of parameter space where the effective supergravity realises our proposal of small field inflation from supersymmetry... dwayne johnson and associates waukeshaWebb6 okt. 2024 · We present a minimal UV complete framework to embed inflation and dark matter by extending the standard model with a singlet real scalar field (the inflaton) and … dwayne johnson and black adamWebb11 aug. 2024 · It is shown that in this class of models the symmetry structure leads to both large and small field inflationary trajectories within a single modular inflation model. The … dwayne johnson ancestryWebb4 apr. 2024 · All single-field inflationary models invoke varying degrees of tuning in order to account for cosmological observations. Mechanisms that generate primordial black holes (PBHs) from enhancement of primordial power at small scales posit inflationary potentials that transiently break scale invariance and possibly adiabaticity over a range of modes. dwayne johnson and andre the giantWebb22 mars 2024 · For the small field inflation, however, we present the parameter decoupling and coupling scenarios. For both scenarios, we compute and inspect n_s and r showing interesting results. For three different values of the number of e-folds N=60,65 and 70, we find that the coupling between f(R,T)1 and the scalar potential via the moduli space … dwayne johnson and charles barkleyWebbWe study small field models of inflation, which, against previous expectations, yield significant Gravitational Wave (GW) signal while reproducing other measured observable quantities in the... dwayne johnson and billy bob thornton movie