ar X iv : h ep - t h / 01 05 31 8 v 1 3 1 M ay 2 00 1 Trace anomaly for 4 D higher derivative scalar - dilaton theory

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 - t h / 06 05 06 9 v 2 2 7 M ay 2 00 7 Extended 2 d generalized dilaton gravity theories

We show that an anomaly-free description of matter in (1+1) dimensions requires a correction of the 2d relativity principle, which is connected to a noncommutativity of 2d Minkowski space that introduces a 2d Planck length. Then, in order to dynamically describe this noncommutative structure of the tangent space, we propose to extend the usual 2d generalized dilaton gravity models by a non-stan...

ar X iv : h ep - t h / 01 05 13 4 v 1 1 4 M ay 2 00 1 WATPPHYS - TH 01 / 07 Vortex Holography

We show that the Abelian Higgs field equations in the four dimensional anti de Sitter spacetime have a vortex line solution. This solution, which has cylindrical symmetry in AdS 4 , is a generalization of the flat spacetime Nielsen-Olesen string. We show that the vortex induces a deficit angle in the AdS 4 spacetime that is proportional to its mass density. Using the AdS/CFT correspondence, we ...

ar X iv : h ep - p h / 02 05 01 6 v 1 2 M ay 2 00 2 Scalar a 0 ( 980 ) meson in φ → π 0 ηγ decay

ar X iv : h ep - t h / 02 02 05 4 v 2 1 4 M ar 2 00 2 Dilatonic monopoles from ( 4 + 1 ) - dimensional vortices

We study spherically and axially symmetric monopoles of the SU(2) EinsteinYang-Mills-Higgs-dilaton (EYMHD) system with a new coupling between the dilaton field and the covariant derivative of the Higgs field. This coupling arises in the study of (4+ 1)dimensional vortices in the Einstein-Yang-Mills (EYM) system. [email protected] [email protected]