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Measuring the shape of the Universe
Neil J. Cornish, Jeffrey R. Weeks
Since the dawn of civilization, humanity has grappled with the big questions of existence and creation. Modern cosmology seeks to answer some of these questions using a combination…
Of Matter Less Repulsive than a Cosmological Constant
Neil J. Cornish, Glenn D. Starkman
The case grows ever stronger that the average density of matter, ordinary and dark, is less than the critical density required for a flat universe. However, most of determinations…
Ringing the eigenmodes from compact manifolds
Neil J. Cornish, Neil G. Turok
We present a method for finding the eigenmodes of the Laplace operator acting on any compact manifold. The procedure can be used to simulate cosmic microwave background fluctuation…
Circles in the Sky: Finding Topology with the Microwave Background Radiation
Neil Cornish, David Spergel, Glenn Starkman
If the universe is finite and smaller than the distance to the surface of last scatter, then the signature of the topology of the universe is writ large on the microwave background…