2 7 D ec 2 00 6 Spin Magnetohydrodynamics

2 3 Ju l 2 00 7 Spin Magnetohydrodynamics

Starting from the non-relativistic Pauli description of spin 1 2 particles, a set of fluid equations, governing the dynamics of such particles interacting with external fields and other particles, is derived. The equations describe electrons, positrons, holes, and similar conglomerates. In the case of electrons, the magnetohydrodynamic limit of an electron–ion plasma is investigated. The result...

ar X iv : h ep - t h / 06 12 16 1 v 2 2 6 D ec 2 00 6

BTZ black hole is interpreted as exact solution of 3d higher spin gauge theory. Solutions for free massless fields in BTZ black hole background are constructed with the help of the star-product algebra formalism underlying the formulation of 3d higher spin theory. It is shown that a part of higher spin symmetries remains unbroken for special values of the BTZ parameters.

ar X iv : h ep - p h / 05 12 21 6 v 2 1 7 D ec 2 00 5 QUANTIZATION AND HIGH ENERGY UNITARITY IN ORBIFOLD THEORIES

ar X iv : 0 71 2 . 28 10 v 1 [ m at h - ph ] 1 7 D ec 2 00 7 Ground state energy of the low density Hubbard model

We derive a lower bound on the ground state energy of the Hubbard model for given value of the total spin. In combination with the upper bound derived previously by Giuliani [3], our result proves that in the low density limit, the leading order correction compared to the ground state energy of a non-interacting lattice Fermi gas is given by 8πa̺u̺d, where ̺u(d) denotes the density of the spin-up ...

ar X iv : h ep - p h / 99 01 23 8 v 2 1 7 D ec 2 00 2 PHOTOPRODUCTION OF ψ ′ AS A TEST OF COLOR – OCTET MODEL

We have calculated the cross section of ψ ′ photoproduction at small–p T regions in polarized γp collisions for testing the color–octet model, which is based on NRQCD factorization formalism. We show that the measurement of the two– spin asymmetry of this process might be effective to constrain the value of NRQCD matrix elements.