Massless spin-2 field in de Sitter space

Spin (1/2) Wave Equation in De-sitter Space.

* This work was aided by grants from the American Cancer Society, Inc., the National Foundation, and the U.S. Public Health Service, Grant No. E5131. 1 Vogt, M., and R. Dulbecco, these PROCEEDINGS, 46, 365-370 (1960). 2Vogt, M., and R. Dulbecco, Virology, 16, 41-51 (1962). 3 Dulbecco, R., and G. Freeman, Virology, 8, 396-397 (1959). 4 Fourfold concentration of amino acids and vitamins + 0.4 mM ...

Special Massive Spin-2 on de Sitter Space

The theory of a massive spin-2 state on the de Sitter space – with the mass squared equal to one sixth of the curvature – is special for two reasons: (i) it exhibits an enhanced local symmetry; (ii) it emerges as a part of the model that gives rise to the self-accelerated Universe. The known problems of this theory are: either it cannot be coupled to a non-conformal conserved stress-tensor beca...

Creation of spin-1/2 particles by an electric field in de Sitter space.

In the present article we solve the Dirac equation in a de Sitter universe when a constant electric field is present. Using the Bogoliubov transformations, we compute the rate of spin 1/2 created particles by the electric field. We compare our results with the scalar case. We also analyze the behavior of the density of particles created in the limit H=0, when de Sitter background reduces to a f...

Numerical simulations of the gravitational collapse for a massless scalar field in anti-de Sitter space

“Massive” vector field in de Sitter space

We present in this paper a covariant quantization of the “massive” vector field on de Sitter (dS) space based on analyticity in the complexified pseudo-Riemanian manifold. The correspondence between unitary irreducible representations of the de Sitter group and the field theory on de Sitter space-time is essential in our approach. We introduce the Wightman-Gärding axiomatic for vector field on ...