ar X iv : h ep - t h / 05 11 20 9 v 1 2 1 N ov 2 00 5 Knot soliton models , submodels , and their symmetries

ar X iv : h ep - t h / 05 11 16 1 v 2 1 9 N ov 2 00 6 The Effective Potential in the Massive φ 4 4 Model

ar X iv : h ep - t h / 05 11 23 3 v 2 2 9 N ov 2 00 5 One - loop f ( R ) Gravitational Modified Models

The one-loop quantisation of a general class of modified gravity models around a classical de Sitter background is presented. Application to the stability of the models is addressed.

ar X iv : h ep - t h / 05 11 23 3 v 1 2 3 N ov 2 00 5 One - loop f ( R ) Gravitational Modified Models

The one-loop quantisation of a general class of modified gravity models around a classical de Sitter background is presented. Application to the stability of the models is addressed.

ar X iv : h ep - p h / 05 11 25 9 v 1 2 2 N ov 2 00 5 On the smallness of the cosmological constant in SUGRA models

In no–scale supergravity global symmetries protect local supersymmetry and a zero value for the cosmological constant. We consider the breakdown of these symmetries and present a minimal SUGRA model motivated by the multiple point principle, in which the total vacuum energy density is naturally tiny. In order to reproduce the observed value of the cosmological constant and preserve gauge coupli...

ar X iv : h ep - t h / 05 11 16 1 v 1 1 6 N ov 2 00 5 The Effective Potential in the Massive φ 4 4 Model