This talk will be a review of two recent papers with Matilde Marcolli (arXiv:1504.04005 [4] and arXiv:1402.2158 [5]).
Links:
[1] https://www.mpim-bonn.mpg.de/de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/de/node/3444
[3] https://www.mpim-bonn.mpg.de/de/node/6043
[4] http://arxiv.org/abs/1504.04005
[5] http://arxiv.org/abs/1402.2158