717 citations · 4.8k across the 112 of their papers we have counts for
3 papers · 1 filter
Quantum Gravity and Inflation
Stephon Alexander, Justin Malecki, Lee Smolin
Using the Ashtekar-Sen variables of loop quantum gravity, a new class of exact solutions to the equations of quantum cosmology is found for gravity coupled to a scalar field, that…
The geometrization of matter proposal in the Barrett-Crane model and resolution of cosmological problems
S. Alexander, L. Crane, M. D. Sheppeard
We give an overview of the current issues in early universe cosmology and consider the potential resolution of these issues in an as yet nascent spin foam cosmology. The model is t…
Non-Topological Inflation from Embedded Defects
Stephon Alexander, Robert Brandenberger, Moshe Rozali
We discuss a new mechanism of obtaining a period of cosmological inflation in the context of string theory. This mechanism is based on embedded defects which form dynamically on hi…