Primordial fluctuations of the metric in the warm inflation scenario
Mauricio Bellini (Universidad Nac. de Mar del Plata)
TL;DR
This paper investigates how metric fluctuations evolve during warm inflation using a semiclassical approach, finding that fluctuations diminish over time in a power-law expanding universe.
Contribution
It introduces a semiclassical framework to analyze metric fluctuations in warm inflation, highlighting their decay over time in a specific expansion model.
Findings
Metric fluctuations decrease with time in power-law expansion.
Semiclassical expansion provides insights into fluctuation dynamics.
Results support stability of the inflationary universe model.
Abstract
I consider a semiclassical expansion of the scalar field in the warm inflation scenario. I study the evolution for the fluctuations of the metric around the Friedmann-Robertson-Walker one. The formalism predicts that, in the power-law expansion universe, the fluctuations of the metric decreases with time.
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Taxonomy
TopicsCosmology and Gravitation Theories · Stochastic processes and financial applications · Geophysics and Gravity Measurements