I have done work at the interface of gravitational physics and particle physics. I
have studied gravitational theories in higher dimensional space-times in an effort
to understand how one might combine gravity with particle physics. I have approached
the gravity particle physics boundary also via investigations the quantum phenomenon
whereby black holes radiate thermal radiation. Recently I have been studying the quantum
mechanical Aharonov-Bohm effect, where particles have their quantum phase modified
even in the case when they experience no classical forces.
Ray Chiao, Harry Hart, Michael Scheibner, Jay Sharping, Nader Inan, Douglas Singleton,
and Michael Tobar “Energy level shift of quantum systems via the scalar electric Aharonov-Bohm
effect” Phys. Rev. A 107, 042209 (2023).
Michael Bishop, Joey Contreras, and Douglas Singleton, “The more things change the
more they stay the same: Minimum lengths with unmodified uncertainty principle and
dispersion relation”, Int. J. of Mod. Phys. D 31, 2241001 (2022)