Four-point correlator of vector currents and electric current susceptibility in holographic QCD

The Vector Current Correlator

Chiral currents and static properties of nucleons in holographic QCD

We analyze static properties of nucleons in the two flavor holographic QCD model of Sakai and Sugimoto described effectively by a five-dimensional U(2) YangMills theory with the Chern-Simons term on a curved background. The baryons are represented in this model as a soliton, which at a time slice is approximately the BPST instanton with a fixed size. First, we construct a chiral current in four...

The Mixed - Isospin Vector Current Correlator in ChiralPerturbation Theory and QCD

The mixed-isospin vector current correlator, h0jT(V V !)j0i is evaluated using both QCD sum rules and Chiral Perturbation Theory (ChPT) to one-loop order. The sum rule treatment is a modiication of previous analyses necessitated by the observation that those analyses produce forms of the correlator that fail to be dominated, near q 2 = 0, by the most nearby singularities. Inclusion of contribut...

Mass Corrections to the Vector Current Correlator †

Three-loop QCD corrections to the vector current correlator are considered. The large momentum procedure is applied in order to evaluate mass corrections up to order (m2/q2)6. The inclusion of the first seven terms to the ratio R = σ(e+e− → hadrons)/σ(e+e− → μ+μ−) leads to reliable predictions from the high energy region down to relatively close to threshold. PACS numbers: 12.38.-t, 12.38.Bx, 1...

ELECTRIC CURRENT Effect of Electric Currents on Cells and Tissues

In the presence ol electrical currents, the body behaves like an electrochemical system. On the other hand, due to anatomical reasons such as the presence of membranes, it generates potential differences between different parts of the body. Therefore, when one considers the possibility of electrical currents acting upon the body, the end result will be the integration of the intrinsic currents ...