Laura DeMarco
American mathematician (born 1974)
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Career
DeMarco received her Ph.D. from Harvard University in 2002 under the supervision of Curtis T. McMullen. She held an NSF Postdoctoral Fellowship and was an L. E. Dickson Instructor at the University of Chicago from September 2002 to August 2005. She was also an assistant professor at the University of Chicago, and then she moved to the University of Illinois at Chicago, where she was tenured and promoted to professor. She moved to Northwestern University in 2014, and was promoted to Henry S. Noyes Professor of Mathematics in 2019, before she moved to Harvard University in 2020. She has been appointed the Hollis Professor of Mathematicks and Natural Philosophy as of 2026
DeMarco is an organizer of GROW (Graduate Research Opportunities for Women) undergraduate conference.
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Research
DeMarco's research involves algebraic, arithmetic and complex dynamics with an emphasis on their interactions with each other. She has studied dynamically meaningful compactifications of the moduli space of rational maps on In joint work with Curtis McMullen, she showed how simplicial metrized trees can be used to compactify the moduli space of polynomials. Together with Xander Faber, DeMarco has studied degenerations of complex dynamical systems from the viewpoint of Berkovich spaces.
With Matthew Baker, DeMarco pioneered the study of unlikely intersections in arithmetic dynamics and formulated the dynamical André-Oort conjecture. Together with Holly Krieger and Hexi Ye, DeMarco proved the first instances of the uniform dynamical Manin-Mumford conjecture for Lattès maps and for quadratic unicritical polynomials. In collaboration with Niki Myrto Mavraki, DeMarco studied the notion of non-degeneracy for polarized dynamical systems and its relation to stability. Later with Niki Myrto Mavraki and Hexi Ye, DeMarco proved a uniform version of the dynamical André-Oort conjecture.