ar X iv : h ep - t h / 93 09 04 8 v 2 2 6 A pr 1 99 5 Particle Mechanics Models with W - symmetries

ar X iv : h ep - p h / 98 04 40 7 v 1 2 6 A pr 1 99 8 B c → l ν̄γ DECAY IN LIGHT CONE QCD

ar X iv : h ep - t h / 93 04 10 3 v 1 2 2 A pr 1 99 3 EHU - FT - 93 April 1993 THREE - LOOP CALCULATION OF THE ANYONIC FULL CLUSTER EXPANSION

We calculate the perturbative correction to every cluster coefficient of a gas of anyons through second order in the anyon coupling constant, as described by Chern-Simons field theory.

ar X iv : h ep - t h / 96 04 07 8 v 1 1 5 A pr 1 99 6 ITEP

We discuss the construction of the spectral curve and the action integrals for the " elliptic " XY Z spin chain of the length Nc. Our analysis can reflect the integrable structure behind the " elliptic " N = 2 supersymmetric QCD with N f = 2Nc .

ar X iv : h ep - t h / 93 04 01 2 v 1 5 A pr 1 99 3 RIMS - 918 April , 1993 General Form of Dilaton Gravity and Nonlinear Gauge Theory

We construct a gauge theory based on general nonlinear Lie algebras. The generic form of ‘dilaton’ gravity is derived from nonlinear Poincaré algebra, which exhibits a gauge-theoretical origin of the non-geometric scalar field in two-dimensional gravitation theory.

ar X iv : h ep - t h / 96 04 15 9 v 1 2 5 A pr 1 99 6 BGU - PH - 96 / 08 SPECTRUM OF COSMIC GRAVITATIONAL WAVE BACKGROUND

Models of string cosmology predict a stochastic background of gravitational waves with a spectrum that is strongly tilted towards high frequencies. I give simple approximate expressions for spectral densities of the cosmic background which can be directly compared with sensitivities of gravitational wave detectors.