The Hantzsche-Wendt Manifold in Cosmic Topology

Understand

The Hantzsche-Wendt space is one of the 17 multiply connected spaces of the three-dimensional Euclidean space E^3.

• It is a compact and orientable manifold which can serve as a model for a spatial finite universe.
• Since it possesses much fewer matched back-to-back circle pairs on the cosmic microwave background (CMB) sky than the other compact flat spaces, it can escape the detection by a search for matched circle pairs.
• The suppression of temperature correlations C(theta) on large angular scales on the CMB sky is studied.