Electric-Magnetic Duality of Topological Gauge Theories from Compactification

Understand

In this note, we discuss electric-magnetic duality between a pair of 4d topological field theories (TQFTs) by considering their compactifications to 2 dimensions.

• These TQFTs control the long-distance behavior of loop and surface operators in 4d gauge theories with gapped phases.
• These were recently used in work by S.
• Gukov and A.