Kavli Affiliate: Yuji Tachikawa | Summary:We show that the low-energy effective actions of two ten-dimensional supersymmetric heterotic strings are different by a $mathbbZ_3$-valued discrete topological term even after we turn off the $E_8times E_8$ and $Spin(32)/mathbbZ_2$ gauge fields. This will be demonstrated by considering the inflow of normal bundle anomaly to the respective NS5-branes from […]
Continue.. On a $mathbbZ_3$-valued discrete topological term in 10d heterotic string theories