Topological Modular Forms, the Witten Genus, and the Theorem of the Cube

Author(s):  
Michael J. Hopkins
2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Sergei Gukov ◽  
Du Pei ◽  
Pavel Putrov ◽  
Cumrun Vafa

Abstract We build a connection between topology of smooth 4-manifolds and the theory of topological modular forms by considering topologically twisted compactification of 6d (1, 0) theories on 4-manifolds with flavor symmetry backgrounds. The effective 2d theory has (0, 1) supersymmetry and, possibly, a residual flavor symmetry. The equivariant topological Witten genus of this 2d theory then produces a new invariant of the 4-manifold equipped with a principle bundle, valued in the ring of equivariant weakly holomorphic (topological) modular forms. We describe basic properties of this map and present a few simple examples. As a byproduct, we obtain some new results on ’t Hooft anomalies of 6d (1, 0) theories and a better understanding of the relation between 2d (0, 1) theories and TMF spectra.


2016 ◽  
Vol 20 (6) ◽  
pp. 3133-3217 ◽  
Author(s):  
Akhil Mathew ◽  
Vesna Stojanoska

2009 ◽  
Vol 5 (2) ◽  
pp. 853-872 ◽  
Author(s):  
Mark Mahowald ◽  
Charles Rezk

2019 ◽  
Vol 12 (2) ◽  
pp. 577-657 ◽  
Author(s):  
M. Behrens ◽  
K. Ormsby ◽  
N. Stapleton ◽  
V. Stojanoska

2014 ◽  
Vol 138 (8) ◽  
pp. 912-970 ◽  
Author(s):  
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2015 ◽  
Vol 203 (2) ◽  
pp. 359-416 ◽  
Author(s):  
Michael Hill ◽  
Tyler Lawson

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