We use an s-channel picture of hard hadronic collisions to investigate the parton distribution function for quarks at small momentum fraction x, which corresponds to very high energy scattering. We study the renormalized quark distribution at one loop in this approach. In the high-energy picture, the quark distribution function is expressed in terms of a Wilson-line correlator that represents t...

We consider the (1+1)-dimensional N = (2, 2) super Yang–Mills theory which is obtained by dimensionally reducing N = 1 super Yang–Mills theory in four dimension to two dimensions. We do our calculations in the large-Nc approximation using Supersymmetric Discrete Light Cone Quantization. The objective is to calculate quantities that might be investigated by researchers using other numerical meth...

Most of the watermarking schemes that have been proposed until now employ a correlator in the detection stage. The current paper proposes a new detector scheme that can be applied in the case of additive watermarking in the DCT or DWT domain. Certain properties of the probability density function of the coefficients in these domains are exploited in order to construct an asymptotically optimal ...

We discuss holographic principle of double Wilson loop correlator in the case of spinning string in AdS/CFT correspondence. Following the general method proposed by Yoneya, et al. for bulk-boundary correspondence in the large J limit, we study the spinning string solution which comes from the boundary and goes to the boundary. We then show that the spinning string solution directly gives the do...

Multiple-object input to the recently introduced phase-extraction correlator may cause difficulties owing to interference effects. Similar effects have been observed previously in the nonlinear joint transform correlator. It is shown theoretically and by computer simulations that these effects are seldom observable in practice, and even then they can be substantially reduced by employing a prop...

Various QCD correlators are calculated in the instanton liquid model in zeromode approximation and 1/Nc expansion. Previous works are extended by including dynamical quark loops. In contrast to the original ”perturbative” 1/Nc expansion not all quark loops are suppressed. In the flavor singlet meson correlators a chain of quark bubbles survives the Nc →∞ limit causing a massive η′ in the pseudo...