AbstractIn this talk I will revisit the correspondence between 3d $\mathcal{N}=2$ SQCD and the quantum K-theory of the Grassmannian variety Gr$(N_c, n_f)$. 3d $N=2$ SQCD has gauge group $U(N_c)_{k,k+l N_c}$ and $n_f$ chiral matter multiplets in the fundamental representation of $U(N_c)$. By analysing the moduli space of 3d vacua, we will fix the values of the Chern-Simons (CS) levels $(k,l)$ th...
AbstractEuclidean wormholes have played an important role in recent progress on 2D gravity and on black hole information in higher dimensions. However, these spacetimes can also lead to puzzling results that seem to disagree with quantum mechanics and the AdS/CFT correspondence, which has led to the suggestion that wormholes arise from coarse-graining over UV degrees of freedom. I will explain ...