Paul Steinhardt
| Paul Steinhardt | |
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| Born | Paul Joseph Steinhardt December 25, 1952 Washington, D.C. |
| Residence | United States |
| Nationality | American |
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Theoretical physics Cosmology |
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| Alma mater | |
| Thesis | Lattice theory of SU(N) flavor quantum electrodynamics in (1 + 1)-dimensions (1978) |
| Doctoral advisor | Sidney R. Coleman |
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Website wwwphy |
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Paul Joseph Steinhardt (born December 25, 1952) is an American theoretical physicist and cosmologist who is currently the Albert Einstein Professor in Science at Princeton University.
In addition, Steinhardt co-founded and is the current Director of the Princeton Center for Theoretical Science.
Steinhardt's research has spanned problems in particle physics, astrophysics, cosmology,condensed matter physics, geoscience and photonics.
In cosmology, some of his important contributions include: He is one of the architects of inflationary cosmology which has become an essential part of the big bang theory. He also presented the first example of eternal inflation, which ultimately revealed the multiverse and caused him to doubt the inflation theory he had pioneered. He then became one of the developers of the leading competing alternatives to the big bang, the ekpyrotic and the cyclic theory of the universe. Steinhardt co-authored the first paper to compute the complete imprint of gravitational waves on the spectrum of temperature variations and on the B-mode polarization of the cosmic microwave background. He also co-authored the first paper to show that, based on observations at the time, most of the energy in the universe must be dark energy, enough to cause the universe to expand at an accelerating rate today. Several years later, the conclusion was confirmed by supernova observations. Working with various collaborators, he introduced the concept of quintessential dark energy to further explain the accelerating expansion of the universe. Steinhardt also co-authored the concept of strongly self-interacting dark matter to explain the missing mass of the universe, and to address anomalies previous theories of dark matter were unable to explain.
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