ar X iv : h ep - t h / 94 05 01 9 v 1 4 M ay 1 99 4 FUSION OF A – D – E LATTICE MODELS

ar X iv : h ep - p h / 94 05 25 5 v 1 9 M ay 1 99 4 6453 April , 1994 ( T / E ) Spin , Mass , and Symmetry

ar X iv : h ep - t h / 01 01 05 9 v 2 1 4 M ay 2 00 1

We consider the complex scalar field coupled to background NC U(1) YM and calculate the correlator of two gauge invariant composite operators. We show how the noncommutative gauge invariance is restored for higher correlators (though the Green's function itself is not invariant). It is interesting that the recently discovered noncommutative solitons appear in the calculation.

ar X iv : h ep - p h / 94 05 28 5 v 1 1 3 M ay 1 99 4 TUTP – 94 - 10

We consider dyon configurations in the standard electroweak model. In the presence of a θ term and no fermions, the usual result q = (n+ θ/2π)e is obtained for the electric charge spectrum. The effect of including standard model fermions is discussed qualitatively.

ar X iv : h ep - t h / 94 05 08 7 v 1 1 3 M ay 1 99 4 Hirota equation as an example of integrable symplectic map ∗

The hamiltonian formalism is developed for the Sine-Gordon model on the space-time light-like lattice, first introduced by Hirota. The evolution operator is explicitely constructed in the quantum variant of the model, the integrability of corresponding classical finite-dimensional system is established.

ar X iv : h ep - p h / 99 05 46 9 v 1 2 5 M ay 1 99 9 DESY 99 – 060 hep - ph / 9905469 May 1999 W Boson Production at NLO ∗

We discuss W boson production at HERA including NLO QCD corrections. A detailed comparison with previous work is presented.