161 citations · 685 across the 15 of their papers we have counts for
4 papers · 1 filter
A Cosmological Super-Bounce
Michael Koehn, Jean-Luc Lehners, Burt A. Ovrut
We study a model for a non-singular cosmic bounce in N=1 supergravity, based on supergravity versions of the ghost condensate and cubic Galileon scalar field theories. The bounce i…
What the characters of irreducible subrepresentations of Jordan cells can tell us about LCFT
Michael Flohr, Michael Koehn
In this article, we review some aspects of logarithmic conformal field theories which can be inferred from the characters of irreducible submodules of indecomposable modules. We wi…
Supersymmetric Cubic Galileons Have Ghosts
Michael Koehn, Jean-Luc Lehners, Burt Ovrut
Galileons are higher-derivative theories of a real scalar which nevertheless admit second order equations of motion. They have interesting applications as dark energy models and in…
Solutions of the Klein-Gordon equation in an infinite square-well potential with a moving wall
Michael Koehn
Employing a transformation to hyperbolic space, we derive in a simple way exact solutions for the Klein-Gordon equation in an infinite square-well potential with one boundary movin…