## Power Spectrum with Auxiliary Fields in de Sitter Space    [PDF]

M. Mohsenzadeh, M. R. Tanhayi, E. Yusofi
We study the standard power spectrum of primordial fluctuations in the early universe using auxiliary fields and excited-de Sitter solution. The auxiliary fields are negative norm solutions and as it is shown, with a fixed boundary condition, utilizing these states results in a finite power spectrum without any infinity. The power spectrum is determined by the de Sitter solutions up to some corrections and the space-time symmetry is not broken in this point of view. The modulation to the power spectrum is of order $(\frac{H}{\Lambda})^{2}$, where $H$ is the Hubble parameter and $\Lambda$ is the energy scale, e.g., Planck scale.
View original: http://arxiv.org/abs/1306.6722