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Physics Colloquium: Student Presentations |
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| Category: | College Of Engineering - Phy | |
| Date & Time: |
Wednesday, 10/31/2012 from 02:00 PM to 03:00 PM |
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| Location: | Seng 102 | |
| Admission: | Free! | |
| Contact: |
Robert Fisher rfisher1@umassd.edu 508-999-8353 |
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| Description: | Physics Colloquium - Student Presentations Sunghoon Kim UMass Dartmouth EAS Ph.D. Student Advisor: J.P. Hsu Title: "Investigation of the Graviton Self-Energy with General Gauge in Yang-Mills Gravity" Abstract: As long as the gravitational coupling constant G has the dimension of the length (in units where hbar and c are both unity), a gravitational field theory is not renormalizable by power counting. Yang-Mills gravity is a new formulation with 4-dimensional space-time translational gauge symmetry. In Yang-Mills gravity, the maximum graviton self-coupling is the 4-vertex. We would like to compare the higher order processes of Yang-Mills gravity and renormalizable gauge theory (e.g. QED). It is hoped that the results will shed light on the problem of renormalization in quantum gravity. Gary Forrester UMass Dartmouth EAS Ph.D. Student Advisor : Gaurav Khanna Title: "Gravitational Wave Emission from Binary Black Hole Systems" Abstract: Gravitational Wave Observatories such as LIGO and LISA will need waveform templates for filtering techniques required for detection. Some of the most promising sources of gravitational radiation that can be detected by current and planned detectors are binary black hole systems (BBH), especially in the extreme mass ratio limit (EMRI). Our task is to create a full 3D numerical simulation of a BBH system in order to extract the waveforms generated. We have made use of Einstein ToolKit framework which is a collection of many codes used for astrophysical simulation. Our ultimate goal of testing the accuracy of a perturbative approach, which will allow for much faster computation time and therefore a much more efficient means of generating waveform templates. | |
