Paul J. Steinhardt is Albert Einstein Professor in Science at Princeton University and director of the Princeton Center for Theoretical Science. His research spans problems in particle physics, astrophysics, cosmology and condensed matter physics.
Cosmic Inflation Theory Faces Challenges
The latest astrophysical measurements, combined with theoretical problems, cast doubt on the long-cherished inflationary theory of the early cosmos and suggest we need new ideas
Paul Steinhardt Disowns Inflation, the Theory He Helped Create
Is the theory at the heart of modern cosmology deeply flawed?
The Inflation Debate
Is the theory at the heart of modern cosmology deeply flawed?
The Quintessential Universe
The universe has recently been commandeered by an invisible energy field, which is causing its expansion to accelerate outward Is it all over but the shouting?
The Quintessential Universe
The universe has recently been commandeered by an invisible energy field, which is causing its expansion to accelerate outward
The Inflationary Universe
A new theory of cosmology suggests that the observable universe is embedded in a much larger region of space that had an extraordinary growth spurt a fraction of a second after the primordial big bang