TY - JOUR AU - del Rio, A. AU - Navarro-Salas, J. PY - 2014 DA - 2014// TI - Spacetime correlators of perturbations in slow-roll de Sitter inflation T2 - Phys. Rev. D JO - Physical Review D SP - 084037 EP - 7pp VL - 89 IS - 8 PB - Amer Physical Soc AB - Two-point correlators and self-correlators of primordial perturbations in quasi-de Sitter spacetime backgrounds are considered. For large separations two-point correlators exhibit nearly scale invariance, while for short distances self-correlators need standard renormalization. We study the deformation of two-point correlators to smoothly match the self-correlators at coincidence. The corresponding angular power spectrum is evaluated in the Sachs-Wolfe regime of low multipoles. Scale invariance is maintained, but the amplitude of C(l)could change in a nontrivial way. SN - 1550-7998 UR - http://arxiv.org/abs/arXiv:1401.6912 UR - https://doi.org/10.1103/PhysRevD.89.084037 DO - 10.1103/PhysRevD.89.084037 LA - English N1 - WOS:000334335200008 ID - delRio+Navarro-Salas2014 ER -