 With Gregory Gabadadze and Massimo Porrati he co-pioneered and advanced this direction by proposing a generally covariant model of infrared modification of gravity (the so-called DGP model), and studying many novel and subtle features of this class of models.Dvali received New York City's Mayor's Award for Excellence in Science and Technology in 2000.Dvali is a recipient of the David and Lucile Packard Foundation's Packard Fellowship, the Alfred P. Sloan foundation fellowship and Humboldt Professorships (2008).