A supermembrane description of string-string duality

In the absence of macroscopic and solitonic strings, we show that the open membrane action on T3 × S1/Z2 can be mapped to the closed membrane action on K3. The main difference between the two actions is that one generates the gauge modes in the worldvolume action which is the strong coupling limit of type IIA superstring while the other action generates the gauge modes in a worldsheet action. Thus explaining membrane-string duality in D = 7, which naturally leads to string-string duality in D = 6.