NAGIOS: RODERIC FUNCIONANDO

Enhanced local-type inflationary trispectrum from a non-vacuum initial state

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Enhanced local-type inflationary trispectrum from a non-vacuum initial state

Mostra el registre complet de l'element

Visualització (402.4Kb)

Agulló, Iván; Navarro Salas, José; Parker, Leonard

Aquest document és un/a article, creat/da en: 2012

Este documento está disponible también en : 10.1088/1475-7516/2012/05/019

We compute the primordial trispectrum for curvature perturbations produced during cosmic inflation in models with standard kinetic terms, when the initial quantum state is not necessarily the vacuum state. The presence of initial perturbations enhances the trispectrum amplitude for configuration in which one of the momenta, say k(3), is much smaller than the others, k(3) << k(1,2,4). For those squeezed con figurations the trispectrum acquires the so-called local form, with a scale dependent amplitude that can get values of order epsilon(k(1)/k(3))(2). This amplitude could be larger than the prediction of the so-called Maldacena consistency relation by a factor as large as 10(6), and could reach the sensitivity of forthcoming observations, even for single-field inflationary models.

Veure al catàleg Trobes