Exploring the Equations of State for Multiple Component Universes

Presentation Type

Poster/Portfolio

Presenter Major(s)

Physics

Mentor Information

Brett Bolen, bolenbr@gvsu.edu; Rupam Das, dasr@gvsu.edu

Department

Physics

Location

Henry Hall Atrium 99

Start Date

13-4-2011 2:00 PM

End Date

13-4-2011 3:00 PM

Keywords

Mathematical Science

Abstract

The Friedman equations are a set of second order differential equations which govern the evolution of spacetime for an isotropic and homogeneous universe. The traditional solutions to these equations all lead to a universe which is decelerating. However in 1998, observations of type IA supernovae lead astronomers to believe in an accelerating universe. In this project, we investigated the conditions (equations of state) for multiple component universes that satisfy an accelerating expansion. A focus of this project was the investigation of the equation of state for a hypothetical substance known as the Chaplygin gas. We also explored the equation of state for a possible universal fate known as the Big Rip.

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Apr 13th, 2:00 PM Apr 13th, 3:00 PM

Exploring the Equations of State for Multiple Component Universes

Henry Hall Atrium 99

The Friedman equations are a set of second order differential equations which govern the evolution of spacetime for an isotropic and homogeneous universe. The traditional solutions to these equations all lead to a universe which is decelerating. However in 1998, observations of type IA supernovae lead astronomers to believe in an accelerating universe. In this project, we investigated the conditions (equations of state) for multiple component universes that satisfy an accelerating expansion. A focus of this project was the investigation of the equation of state for a hypothetical substance known as the Chaplygin gas. We also explored the equation of state for a possible universal fate known as the Big Rip.