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17 papers · 2 filters
The Simplicity of Perfect Atoms: Degeneracies in Supersymmetric Hydrogen
Tomas Rube, Jay G. Wacker
Supersymmetric QED hydrogen-like bound states are remarkably similar to non-supersymmetric hydrogen, including an accidental degeneracy of the fine structure and which is broken by…
Unraveling L_{n,k}: Grassmannian Kinematics
Jared Kaplan
It was recently proposed that the leading singularities of the S-Matrix of N = 4 super Yang-Mills theory arise as the residues of a contour integral over a Grassmannian manifold, w…
Conformality or confinement (II): One-flavor CFTs and mixed-representation QCD
Erich Poppitz, Mithat Unsal
We study QCD-like four dimensional theories in the theoretically controlled framework of deformation theory and/or twisted partition function on S*1 x R*3. By using duality, we sho…
R^4 counterterm and E7(7) symmetry in maximal supergravity
J. Broedel, L. J. Dixon
The coefficient of a potential R^4 counterterm in N=8 supergravity has been shown previously to vanish in an explicit three-loop calculation. The R^4 term respects N=8 supersymmetr…
Comments on large-N volume independence
Erich Poppitz, Mithat Unsal
We study aspects of the large-N volume independence on R**3 x L**G, where L**G is a G-site lattice for Yang-Mills theory with adjoint Wilson-fermions. We find the critical number o…
Stress-Energy Tensor Induced by Bulk Dirac Spinor in Randall-Sundrum Model
Shu-heng Shao, Pisin Chen, Je-An Gu
Motivated by the possible extension into a supersymmetric Randall-Sundrum (RS) model, we investigate the properties of the vacuum expectation value (VEV) of the stress-energy tenso…