Department
Physics
Major
Physics
Research Advisor
Saito, Shun
Advisor's Department
Physics
Funding Source
OURE
Abstract
The flat ΛCDM model of the Universe has started to falter due to recent and precise observations. A prominent example is the Hubble tension; the Hubble constant, the rate at which the universe is currently expanding, is different depending on the method used to measure it. One of the most promising models to resolve the tension is the axion-like Early Dark Energy (EDE) model. However, all the previous work on EDE models assumed a flat Universe. Since the detection of such a component has a significant impact on our understanding of fundamental physics, we must revisit the assumptions in the flat ΛCDM model. In this paper, we will systematically study the impact of the shape of the Universe on the EDE model in light of state-of-the-art cosmological observations. Our goal is to clarify how the EDE model and the shape of the Universe are simultaneously constrained with these recent datasets.
Biography
Jordan Stevens, from Terre du Lac Missouri, is a senior undergraduate in physics here at Missouri S&T. She plans on going to graduate school and getting her PhD in cosmology
Research Category
Sciences
Presentation Type
Oral Presentation
Document Type
Presentation
Award
Sciences – section 1 oral presentation, Third place
Location
Ozark Room
Presentation Date
14 Apr 2022, 2:30 pm - 3:00 pm
Early Dark Energy in Precision Cosmology
Ozark Room
The flat ΛCDM model of the Universe has started to falter due to recent and precise observations. A prominent example is the Hubble tension; the Hubble constant, the rate at which the universe is currently expanding, is different depending on the method used to measure it. One of the most promising models to resolve the tension is the axion-like Early Dark Energy (EDE) model. However, all the previous work on EDE models assumed a flat Universe. Since the detection of such a component has a significant impact on our understanding of fundamental physics, we must revisit the assumptions in the flat ΛCDM model. In this paper, we will systematically study the impact of the shape of the Universe on the EDE model in light of state-of-the-art cosmological observations. Our goal is to clarify how the EDE model and the shape of the Universe are simultaneously constrained with these recent datasets.
