Mark Trodden is a theoretical cosmologist and particle physicist.
Education
In 1992, Trodden moved to the United States of America to enter the Doctor of Philosophy program at Brown University and obtained his Doctor of Philosophy degree in 1995. He worked as a Associate for two years at Massachusetts Institute of Technology and two years at Case Western Reserve University after getting his Doctor of Philosophy From 2000 to 2009, Trodden was a faculty member at Syracuse University, holding the Alumni Professorship from 2005 to 2009.
Career
He is the Fay R. and Eugene L. Langberg Professor of Physics and Company-Director of the Center for Particle Cosmology at the University of Pennsylvania. Trodden received both his Bachelor (mathematics) degree and a Certificate of Advanced Study in Mathematics (Participant III) from Cambridge University. He subsequently spent a year doing research and supervising undergraduates at Cambridge University.
Mark Trodden"s main research areas are the cosmological implications of Quantum Field Theories, General Relativity, and Superstring Theories.
Trodden, with Sean Carroll, introduced a new class of topological defects in ordinary field theories. Trodden"s work in theoretical studies and understanding of the early universe has been widely cited and relied upon by the scientific community.
Specifically, Trodden"s research focuses on configurations consisting of topological solitons which end on others of equal or higher dimension. In such models, the higher-dimensional defect provides Dirichlet boundary conditions for the lower dimensional one.
Trodden, with his co-workers Anne-Christine Davis and Steven Davis, has also investigated the particle physics and cosmological properties of topological defects in supersymmetic theories.
Their first study, dealing with abelian theories demonstrated that all spontaneously broken abelian supersymmetric theories admit cosmic string solutions which are superconducting due to fermion zero modes. Further, by using supersymmetry transformations, they showed how to calculate the supercurrents in terms of the background string fields. They also managed to extended these results to non-abelian theories and investigated the effects of soft supersymmetry breaking.
Trodden describes himself as a "particle cosmologist."
Mark Trodden, et al., Is Cosmic Speed-Up Due to New Gravitational Physics?, Physical Review, 2004.
Mark Trodden, et al., Can the dark energy equation-of-state parameter w be less than -1?, Physical Review, 2003. Mark Trodden, et al., The State of the Dark Energy Equation of State, Physical Review, 2003.