Dr. Donald Colladay

Professor of Physics


Phone Number

Email Address



Heiser 202D


Heiser E172C


Office or Division

Area of Concentration


M.S., Ph.D., Indiana University
B.S., Rensselaer Polytechnic Institute

Professor Colladay received his Ph.D. in theoretical high energy in 1998. He has done research on the question of modifications to the equations of basic physics due to as yet undiscovered effects at very small length scales. Professor Colladay is a specialist primarily in quantum mechanics. In addition to teaching a number of courses in the traditional physics curriculum, Professor Colladay offers a course directed at the general student on the subject of basic high energy physics and its connection to modern cosmology.

Recent Courses

Accelerated Physics I
Physics I Labratory
Structure of Nature

Selected Publications

Colladay, D. (2000). Possible spontaneous breaking of Lorentz and CPT symmetry. Physics of Atomic Nuclei, 63(6), 1097-1102.

Colladay, D. (2002). Scattering cross sections and Lorentz violation. Arxiv preprint hep-ph/0201021

Colladay, D. (2003). Theoretical overview of Lorentz and CPT violation. Arxiv preprint hep-ph/0301223

Colladay, D. (2005). New implications of Lorentz violation. International Journal of Modern Physics A, 20(6), 1260-1267.

Colladay, D., & Altschul, B. (2005). Velocity in Lorentz-violating Fermion theories. Physical Review D, 71(12), 125015.

Colladay, D., & Kostelecky, V. A. (2001). Cross sections and Lorentz violation. Physics Letters B, 511(2-4), 209-217.

Colladay, D., & McDonald, P. (2002). Redefining Spinors in Lorentz-violating Quantum Electrodynamics. Journal of Mathematical Physics, 43(7), 3554-3564. Retrieved March 30, 2007, from AIP database.

Colladay, D., & McDonald, P. (2004). Deformed Instantons. Proceedings CPT and Lorentz Symmentry, Bloomington, Indiana, 6 pages. Arxiv preprint hep-ph/0409251

Colladay, D., & McDonald, P. (2004). Statistical mechanics and Lorentz violation. Physical Review D, 70(12), 125007.

Colladay, D., & McDonald, P. (2004). Yang-Mills Instantons with Lorentz Violation. Journal of Mathematical Physics, 45(8), 3228-3238.

Colladay, D. & McDonald, P. (2004). Nonrelativistic Ideal Gasses with Lorentz Violations. Proceedings of the Third Meeting on CPT and Lorentz Symmetry, Bloomington, IN, 264-269. Arxiv preprint hep-ph/0409252, 2004 – arxiv.org

Colladay, D., & McDonald, P. (2005). Nonrelativistic ideal gases and Lorentz violations. In V. A. Kostelecky (Ed.), Third Meeting on CPT and Lorentz Symmetry lll . Singapore: World Scientific.

Colladay, D., & McDonald, P. (2006). Bose-Einstein condensates as a probe for Lorentz violation. Physical Review D, 73(10), 105006-105012. Retrieved February 7, 2007, from http://link.aps.org/abstract/PRD/v73/e105006

Colladay, D., & McDonald, P. (2006). One-loop renormalization of pure Yang-Mills with Lorentz violation. High Energy Physics – Phenomenology, 1(14 pp.). Arxiv preprint hep-ph/0609084. Retrieved April 10, 2007, from http://arxiv.org/abs/hep-ph/0609084