Marginal deformations of 3d supersymmetric U( N) model and broken higher spin symmetry
Abstract
We examine the marginal deformations of doubletrace type in 3d supersymmetric U( N) model with N complex free bosons and fermions. We compute the anomalous dimensions of higher spin currents to the 1 /N order but to all orders in the deformation parameters by mainly applying the conformal perturbation theory. The 3d field theory is supposed to be dual to 4d supersymmetric Vasiliev theory, and the marginal deformations are argued to correspond to modifying boundary conditions for bulk scalars and fermions. Thus the modification should break higher spin gauge symmetry and generate the massesof higher spin fields. We provide supports for the dual interpretation by relating bulk computation in terms of Witten diagrams to boundary one in conformal perturbation theory.
 Publication:

Journal of High Energy Physics
 Pub Date:
 March 2017
 DOI:
 10.1007/JHEP03(2017)047
 arXiv:
 arXiv:1701.03563
 Bibcode:
 2017JHEP...03..047H
 Keywords:

 AdSCFT Correspondence;
 Conformal Field Theory;
 Higher Spin Gravity;
 Higher Spin Symmetry;
 High Energy Physics  Theory
 EPrint:
 32 pages, 3 figures, minor changes, references added, published version