We propose several quark mass deformations of the holographic model of massless QCD using the D4/D8/D8-brane configuration proposed by Sakai and Sugimoto. The deformations are based on introducing additional D4or D6-branes away from the QCD D4 branes. The idea is similar to extended technicolor theories, where the chiral symmetry breaking by additional D-branes is mediated to QCD to induce non-...

Three isolates of Newcastle disease virus obtained from normal village chickens, which were never vaccinated against Newcastle disease were characterized. These isolates namely D8, D53 and D58 were found to have an ICPI value of 1.59, 0.50 and 0.14 respectively. The deduced amino acid sequence at the FPCS of these three isolates between positions 112 and 119 were G-R-R-Q-K-R-F-I-G-G-R-R-Q-K-R-F...

We discuss chiral symmetry breaking in the intersecting brane model of Sakai and Sugimoto at weak coupling for a generic value of separation L between the flavour D8 and anti-D8-branes. For any finite value of the radius R of the circle around which the colour D4-branes wrap, a non-local Nambu−Jona-Lasinio (NJL) type short-range interaction couples the flavour branes and anti-branes. We argue t...

We study D-brane actions in non-relativistic string theory. consider single and analyse its properties under T-duality. also derive an action for N D8-branes lower dimensional D-branes through T-duality transformations.

Recoil tritium reactions in the aromatic ring were investigated with toluene and benzonitrile in the moderator-free and the C6F6-moderated systems in terms of the intramolecular tritium distribution, the relative tritiation rate, and the isotope effect in toluene. The reactions free from hexafluorobenzene are in essential agreement with non-selective nature shown in hot atom reactions. The addi...