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CAPS Seminar: Power Spectrum Probes Of The Early Universe

Event Type: Seminar/Symposium
Sponsor: Center for AstroPhysical Surveys
Location: NCSA - 1205 W Clark St, Urbana - RM 1040
Date: Sep 29, 2023 12:00 - 1:00 pm
Speaker: Dr. Benjamin Wallisch
Contact: Srinivasan Raghunathan
E-Mail: srinirag@illinois.edu
Views: 35
Originating Calendar: Center for AstroPhysical Surveys; Abstract: Various aspects of the early and primordial universe have been probed by the cosmic microwave background (CMB). Large-scale structure (LSS) observations and their theoretical description have now become precise enough to complement these constraints beyond the baryon acoustic oscillation scale. In this talk, I will discuss how careful theoretical consideration of the underlying physics allows us to gain new insights into the early universe from CMB and LSS power spectra. To illustrate this, I will present theoretical background, data analyses and forecasts for the free-streaming nature of neutrinos, primordial non-Gaussianity beyond the local type and oscillatory features in the primordial power spectrum.