We study the color-dependent confining forces between two quarks by the quenched lattice simulations of Coulomb gauge QCD. The color-singlet and color-antitriplet instantaneous potentials yield attractive forces. The ratio of the string tensions obtained from them is approximately 2, and these tensions have little volume dependence. Meanwhile, the color-octet and color-sextet channels give a mi...

We study heavy-light meson resonances with quantum numbers JP = 0+ and JP = 1+ in terms of the non-linear chiral SU(3) Lagrangian. Adjusting the free parameters that arise at subleading order to reproduce the mass of the D(2420) resonance as well as the new states established recently by the BABAR, CLEO and BELLE collaborations we obtain refined masses for the anti-triplet and sextet states. Bo...

Graphene has been found to be an attractive material since its discovery in 2004 and has drawn enormous interest among researchers owing to its intrinsic electronic and magnetic properties. An indefinitely large graphene sheet, if cut along the two edge directions, can generate two distinct, well-defined small graphene nanoribbons (GNRs), which may be classified into “zigzag” edge (1, transpoly...

We study heavy-light baryon resonances with quantum numbers JP = 12 − in terms of the non-linear chiral SU(3) Lagrangian. Within the χ−BS(3) approach a parameterfree leading order prediction is obtained for the scattering of Goldstone bosons off heavy-light baryon resonances with JP = 12 + . The three states Λc1(2593),Λc0(2880) and Ξc1(2790) discovered by the CLEO collaboration are recovered. W...