ar X iv : c on d - m at / 9 51 21 63 v 2 1 J an 1 99 6 Chiral Fluctuations and Structures

ar X iv : d g - ga / 9 51 20 10 v 2 2 4 M ay 1 99 6 Weierstrass representations for harmonic morphisms on Euclidean spaces and spheres

We construct large families of harmonic morphisms which are holomorphic with respect to Hermitian structures by finding heierarchies of Weierstrass-type representations. This enables us to find new examples of complex-valued harmonic mor-phisms from Euclidean spaces and spheres.

ar X iv : c on d - m at / 9 81 12 63 v 2 2 5 N ov 1 99 8 Electro - mechanical Properties of Carbon Nanotubes

We present a simple picture to understand the bandgap variation of any chiral carbon nanotubes with tensile and torsional strains. Using this picture, we are able to predict a simple dependence of d(Bandgap)/d(strain) on the value of (Nx −Ny) mod 3, for semiconducting tubes. We also predict a novel change in sign of d(Bandgap)/d(strain) as a function of tensile strain arising from a change in t...

ar X iv : c on d - m at / 9 51 21 60 v 1 2 2 D ec 1 99 5 Spin - reflection positivity of the Kondo lattice at half - filling

We examine the spin-reflection positivity of the ground state of the Kondo lattice model at half-filling with the antiferromagnetic and ferromagnetic exchange couplings J = 0. For every positive U > 0, where U is the Coulomb interaction between the conduction electrons, we can show that the ground state is unique.

ar X iv : h ep - l at / 9 51 20 27 v 1 2 1 D ec 1 99 5 1

We present preliminary results of light hadron spectroscopy using valence, tadpole-improved, Clover fermions on an ensemble of gauge configurations generated with 2 flavors of staggered fermions at β = 5.6. We compare the slope and intercept of the curve MV vs. M 2 P S for Clover and Wilson fermions. We show that a higher order chiral perturbation theory ansatz works very well for chiral extrap...

ar X iv : c on d - m at / 9 60 31 90 v 1 2 9 M ar 1 99 6 The Four - Dimensional XY Spin Glass