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Princeton University Physics Department Princeton University

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Cosmology Theory

Working closely with the experimental group, we use astrophysical, particle physics and superstring theory combined with observations to study gravitation and the origin and evolution of our universe.

The study of the nature of large-scale structure was pioneered in this group two decades ago, and we continue to make leading contributions to theories of the origin of this structure. Crucial elements in the work include the measurements by the experimental group of the 2.73 K thermal background radiation, deep observations of galaxies, and the Sloan Digital Sky Survey that operates out of the neighbouring Department of Astrophysical Sciences. One of the principle areas of research is the theoretical analysis of the cosmic microwave background, large-scale structure, and the expansion of the universe to test and constrain cosmological models and measure cosmological parameters.

The origin of the physical universe and the cosmological model that describes its evolution must ultimately be explained by fundamental physics. Our group also studies the relationship between particle/superstring physics and theories of the very early universe, dark matter, the cosmological constant and quintessence. These studies have profound implications for both fundamental physics and cosmology.

Jim Peebles: Theories for large scale structure formation, cosmological tests Frans Pretorius: Einstein's theory of general relativity, specializing in numerical solution of the field equations.
Paul J. Steinhardt: Inflationary cosmology; dark matter and dark energy; string cosmology; quasicrystals  


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