Small field inflation

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August undefined, 2024

Webb19 sep. 2024 · In the case of small field inflation there is a small window in parameter space of typical potentials such as where a phase of eternal accelerated expansion … Webb30 mars 2024 · Long standing themes in inflation include the issue of large field vs. small field inflation as well as the question what fraction of phase space leads to sufficient inflation and furthermore is ...

Small free field inflation in higher curvature gravity SpringerLink

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. 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. highland nissan westville nova scotia

Studies in small field inflation (Journal Article) OSTI.GOV

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 … 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. … Webb22 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 … how is hosting jeopardy

Large and small field inflation from hyperbolic sigma models

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Webb21 feb. 2024 · Reheating via the inflation sector decays to right-handed neutrinos is considered. An upper bound on the reheating temperature T R ≲2×1011(1×1013) GeV, for large (small) field inflation, will suppress contributions from one-loop quantum corrections to the inflation potential. how is hot spot related to volcanoesWebbIf inflation had been small field, you could imagine that it wasn't sensitive to the details of quantum gravity. The potential could be a wild function with all sorts of features, but we wouldn't need to know those, because the scalar field would only move over such a small region that the potential would look more or less like that nice quadratic one. how is hot honey made

"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. " - Small field inflation

Small field inflation

Webb12 sep. 2016 · We consider “new inflation” inflationary models at small fields, embedded in minimal $$ \mathcal{N} $$ = 1 supergravity with a single chiral superfield. Imposing a … 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 …

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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, … Webb6 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 …

Webb30 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 … 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.

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. 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 …

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.

Webb14 juni 2024 · We show that the gauge field excitations on a set of coincident D7 branes, itself critical for moduli stabilization and hence intrinsic to inflation in string theory, coupled with axion fields from bulk fluxes, can act as a spectator sector during inflation. how is hosting the grammysWebbOn 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 how is hosting jeopardy this weekWebb9 sep. 2011 · We explore some issues in slow roll inflation in situations where field excursions are small compared to Mp. We argue that for small field inflation, minimizing … highland noodles frisco txWebbWe 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. how is hotel revenue management usedWebb11 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 … how is hosting my websiteWebb23 apr. 2024 · We investigate the tunneling process and calculate the probability distribution for the initial conditions and for the number of e-folds of slow-roll inflation, … how is hotel occupancy tax calculatedWebb29 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. highland nj bed \u0026 breakfast