Gary Felder
Email: felder@cita.utoronto.ca
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Research Summary
[
Computational Astrophysics,
Cosmology,
Early Universe and General Relativity
]
Gary Felder's primary research interests are in early universe physics,
computational physics, and the connections between cosmology and high
energy theory. His work includes analytical and numerical studies of
inflation and reheating in a variety of models, including string and
supersymmetry inspired theories of high energy physics. He also
develops software for simulations of field interactions in the early
universe.
Research Projects:
(September 2002 - August 2003)
Numerical Studies of Braneworld Dynamics
Working with Johannes Martin, Andrei Frolov, Lev Kofman, and Marco
Peloso of CITA, Felder developed a program for calculating the time
evolution of a braneworld system. The program self-consistently solves
the Einstein equations in the bulk and junction conditions on the
branes. Using this code they were able to show that such systems will
generically tend to have multiple metastable states corresponding to
different effective cosmological constants on the brane. A transition
from such a metastable state to the ground state could account for the
occurrence and end of inflation. This program is being made publicly
available under the name BRANECODE.
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