Collaboration for Observations, Models and Predictions of Anomalies and Cosmic Topology
Joined October 2022
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This difference between the apparent distance on the sphere and the actual 3-D distance can be codified in a “correlation matrix” which we can calculate (with great computational difficulty!). 17/
ALT Heat plot of the correlation matrix for two different topologies at various multipole pairs ℓ,ℓ’
Why is this shape a torus? Link the left & right edges, and you get a tube; link the top & bottom of the tube, and you make a donut. The shape of that starting screen is called the “fundamental domain”. (Picture originally courtesy @JannaLevin) 7/
