Question: At what university did professor Lee Smolin popularize the theory of casual dynamical triangulation (CDT)? 
Context: Wassim Michael Haddad (born July 14, 1961) is a Lebanese-Greek-American applied mathematician, scientist, and engineer, with research specialization in the areas of dynamical systems and control.  His research has led to fundamental breakthroughs in applied mathematics, thermodynamics, stability theory, robust control, dynamical system theory, and neuroscience.  Professor Haddad is a member of the faculty of the School of Aerospace Engineering at Georgia Institute of Technology, where he holds the rank of Professor and Chair of the Flight Mechanics and Control Discipline.  Dr. Haddad is a member of the Academy of Nonlinear Sciences for recognition of paramount contributions to the fields of nonlinear stability theory, nonlinear dynamical systems, and nonlinear control and an IEEE Fellow for contributions to robust, nonlinear, and hybrid control systems. Causal dynamical triangulation (abbreviated as CDT) theorized by Renate Loll, Jan Ambjørn and Jerzy Jurkiewicz, and popularized by Fotini Markopoulou and Lee Smolin, is an approach to quantum gravity that like loop quantum gravity is background independent. Lee Smolin ( ; born June 6, 1955) is an American theoretical physicist, a faculty member at the Perimeter Institute for Theoretical Physics, an adjunct professor of physics at the University of Waterloo and a member of the graduate faculty of the philosophy department at the University of Toronto. The Trouble with Physics: The Rise of String Theory, the Fall of a Science, and What Comes Next is a 2006 book by the theoretical physicist Lee Smolin about the problems with string theory.  Subtitled "The Rise of String Theory, the Fall of a Science, and What Comes Next", the book strongly criticizes string theory and its prominence in contemporary theoretical physics, on the grounds that string theory has yet to come up with a single prediction that can be verified using any technology that is likely to be feasible within our lifetimes.  Smolin also focuses on the difficulties faced by research in quantum gravity, and by current efforts to come up with a theory explaining all four fundamental interactions.  The book is broadly concerned with the role of controversy and diversity of approaches in scientific processes and ethics. Rainbow gravity (or "gravity's rainbow") is a theory that different wavelengths of light experience different gravity levels and are separated in the same way that a prism splits white light into the rainbow.  This phenomenon would be imperceptible in areas of relatively low gravity, such as Earth, but would be significant in areas of extremely high gravity, such as a black hole.  As such the theory claims to disprove that the universe has a beginning or Big Bang, as the big bang theory calls for all wavelengths of light to be impacted by gravity to the same extent.  The theory was first proposed in 2003 by physicists Lee Smolin and João Magueijo, and claims to bridge the gap between general relativity and quantum mechanics.  Scientists are currently attempting to detect rainbow gravity using the Large Hadron Collider. Jan Ambjørn is a Danish physicist regarded as the primary founder of Causal Dynamical Triangulation Theory (CDT). Chung-Kang Peng, PhD, is the Director of the Center for Dynamical Biomarkers at Beth Israel Deaconess Medical Center / Harvard Medical School (BIDMC/HMS).  Under his direction the Center for Dynamical Biomarkers researches fundamental theories and novel computational algorithms for characterizing physiological states in terms of their dynamical properties.   He is also currently the K.-T.  Li Visiting Chair Professor at National Central University (NCU), Visiting Chair Professor at National Chiao Tung University (NCTU) in Taiwan, and Visiting Professor at China Academy of  Chinese Medical Sciences in China.  During 2012-2014, he served as the founding Dean of the College of Health Sciences and Technology at NCU in Taiwan. The Singular Universe and the Reality of Time: A Proposal in Natural Philosophy is a non-fiction book by the American theoretical physicist Lee Smolin and the Brazilian philosopher Roberto Mangabeira Unger.  The book was initially published by Cambridge University Press on December 8, 2014. Group field theory (GFT) is a quantum field theory in which the base manifold is taken to be a Lie group.  It is closely related to background independent quantum gravity approaches such as loop quantum gravity, the spin foam formalism and causal dynamical triangulation.  It can be shown that its perturbative expansion can be interpreted as spin foams and simplicial pseudo-manifolds (depending on the representation of the fields).  Thus, its partition function defines a non-perturbative sum over all simplicial topologies and geometries, giving a path integral formulation of quantum spacetime. The Life of the Cosmos is the debut non-fiction book by American theoretical physicist Lee Smolin.  The book was initially published on January 1, 1997 by Oxford University Press.
Answer: Perimeter Institute for Theoretical Physics