4 citations · 6 across the 3 of their papers we have counts for
7 papers
Missing Lorenz-boosted Circles-in-the-sky
Janna Levin
A topologically finite universe, smaller than the observable horizon, will have circles-in-the-sky: pairs of circles around which the temperature fluctuations in the cosmic microwa…
A Test of a Test for Chaos
John D. Barrow, Janna Levin
A simple new binary test for chaos has been proposed by Gottwald and Melbourne. We apply this test successfully to the Henon-Heiles and Lorenz systems, demonstrating its applicabil…
Gravitational Waves from Spinning Compact Binaries
Neil J. Cornish, Janna Levin
Binary systems of rapidly spinning compact objects, such as black holes or neutron stars, are prime targets for gravitational wave astronomers. The dynamics of these systems can be…
Topological Pattern Formation
Janna Levin, Imogen Heard
We provide an informal discussion of pattern formation in a finite universe. The global size and shape of the universe is revealed in the pattern of hot and cold spots in the cosmi…
The mixmaster universe is unambiguously chaotic
Neil J. Cornish, Janna J. Levin
The Mixmaster or Bianchi IX cosmological model has become one of the archetypal settings for studying gravitational dynamics. The past decade has seen a vigourous debate about whet…
Remarks about Static Back-Reaction on Black Hole Spacetimes
Neil J. Cornish, Janna J. Levin
Recently, it has been claimed that the back reaction of vacuum polarization on a black hole spacetime naturally regularizes infinities in the black hole entropy. We examine the bac…