A holographic description on half planes and wedges for N = 1 SUSY BF theory in 2D

Abstract: BF theory is a topological field theory that appears in different parts of theoretical physics and one of its important uses is in lower dimensional holography settings. While it can be defined as a dimensional reduction of 3D CS theory, it is also equivalent to JT gravity. Moreover, further holographic settings relate BF theory to a particle on group theory. Here, we reconsider this "simplest holography" construction as SL(2,R) invariant particle on group theory and extend the web of dualities diagram in terms of a holographic description of the 2D N=1 BF theory on half-plane and find its 1D particle on group description as N=1B supermultiplet superconformal quantum mechanics. Moreover, we provide wedge space holography-type construction to achieve codimension 2 holography and show the web of dualities diagram also closes diagonally for BF and CS theories. For BF theory it leads to a complex 1D particle on group mechanics on the face of the wedge, a 0D quantum mechanics on the boundary theory of the faces, and its supersymmetric extension is a supermultiplet containing complex boson and complex scalar of the Landau-Ginzburg type. Upon this construction boundary theory also realizes a global U_j(1) invariance which extends the total symmetry group. To have a more complete picture we also included wedge space holography for 3D CS theory as an appendix and showed its codimension 2 holography corresponds to a 1D particle on group we found earlier.