We consider the anomalous dimension of a certain twist two operator in N = 4 super Yang-Mills theory. At strong coupling and large-N it is captured by the classical dynamics of a spinning D5-brane. The present calculation generalizes the result of Gubser, Klebanov and Polyakov (hep-th/0204051): in order to calculate the anomalous dimension of a bound state of k coincident strings, the spinning ...

We construct a new solution of the BFSS matrix theory, which is a counterpart of the BIon solution representing a fundamental string ending on a bound state of a D2-brane and D0-branes. We call this new solution the ‘fuzzy BIon’ and show that this configuration preserves 1/4 supersymmetry of type IIA superstring theory. We also construct an effective action for the fuzzy BIon by analyzing the n...

We show that the potential wells V (x) = x 10 + a x 8 + b x 6 + c x 4 + d x 2 + f /x 2 with a central spike possess arbitrary finite multiplets of elementary exact bound states. Their strong asymptotic growth implies an ambiguity in their PT symmetrically generalized quantization (via complex boundary conditions) but the three eligible recipes coincide at our exceptional solutions.

We construct some classes of instanton solutions of eight dimensional noncommutative ADHM equations generalizing the solutions of eight dimensional commutative ADHM equations found by Papadopoulos and Teschendorff, and interpret them as supersymmetric D0D8 bound states in a NS B-field. Especially, we consider the D0-D8 system with anti-selfdual B-field preserving 3/16 of supercharges. This syst...

We study the spectrum of asymptotic states in the spin-chain description of planar N = 4 SUSY Yang-Mills. In addition to elementary magnons, the asymptotic spectrum includes an infinite tower of multi-magnon bound states with exact dispersion relation,

It was proposed [1] recently to use the decay distribution in terms of the observable ξu = (q 0 + |q|)/MB in the B rest frame to measure Vub, where q is the momentum transfer to the lepton pair. This decay spectrum is unique in that the tree-level and virtual gluon processes b → ulν at the parton level generate a trivial ξu spectrum — a discrete line at ξu = mb/MB, solely on kinematic grounds. ...

The self-energy of an η in a nuclear medium is calculated in a chiral unitary model, and applied to η states in nuclei. Our calculation predicts an attractive η nucleus optical potential which can accommodate many η bound states in different nuclei.

The low energy three nucleon problem with two particle separable potentials is solved. The formalism of Faddeev in recasting the three body equations into Fredholm form and subsequent angular momentum reductions are carried out. Upon searching for a bound state two poles of the amplitude are found. Upon further examination one of the poles is found to have a residue of the wrong sign. This diff...