Is the CMB revealing signs of pre-inflationary physics?
Suddhasattwa Brahma, and Jaime Calder\'on-Figueroa
TL;DR
This paper explores whether current cosmic microwave background data can indicate pre-inflationary physics by examining non-standard initial conditions for primordial fluctuations, potentially reconciling particle physics models with observations.
Contribution
It proposes that non-Bunch-Davies initial conditions could align inflation models with recent observational constraints from CMB data.
Findings
Non-Bunch-Davies initial conditions can reconcile inflation models with data.
Recent CMB observations allow for pre-inflationary physics signatures.
Potential evidence for physics before inflation from CMB analysis.
Abstract
Given the latest observational constraints coming from the joint analyses of the Atacama Cosmology Telescope, the Planck Satellite and other missions, we point out the possibility of reconciling fundamental particle-physics models of inflation with data by considering non-Bunch-Davies initial conditions for primordial density perturbations.
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Taxonomy
TopicsGeomagnetism and Paleomagnetism Studies · Cosmology and Gravitation Theories · Solar and Space Plasma Dynamics