Browsing by Author "Palma Quilodrán, Gonzalo"

Now showing items 1-8 of 8

    • Consistency relations for sharp features in the primordial spectra 
      Mooij, Sander; Palma Quilodrán, Gonzalo; Panotopoulos, Grigoris; Soto, Alex (IOP Press, 2015)
      We study the generation of sharp features in the primordial spectra within the framework of effective field theory of inflation, wherein curvature perturbations are the consequence of the dynamics of a single scalar degree ...
    • Consistently violating the non-Gaussian consistency relation 
      Mooij, Sander; Palma Quilodrán, Gonzalo (IOP Press, 2015)
      Non-attractor models of inflation are characterized by the super-horizon evolution of curvature perturbations, introducing a violation of the non-Gaussian consistency relation between the bispectrum's squeezed limit and ...
    • Cumulative effects in inflation with ultra-light entropy modes 
      Achúcarro, Ana; Atal, Vicente; Germani, Cristiano; Palma Quilodrán, Gonzalo (Institute of Physics Publishing, 2017)
      In multi-field inflation one or more non-adiabatic modes may become light, potentially inducing large levels of isocurvature perturbations in the cosmic microwave background. If in addition these light modes are coupled ...
    • Effective field theory of weakly coupled inflationary models 
      Gwyn, Rhiannon; Palma Quilodrán, Gonzalo; Sakellariadou, Mairi; Sypsas, Spyros (IOP Publishing Ltd and Sissa Medialab srl, 2013-04)
      The application of Effective Field Theory (EFT) methods to inflation has taken a central role in our current understanding of the very early universe. The EFT perspective has been particularly useful in analyzing the ...
    • Features of heavy physics in the CMB power spectrum 
      Achúcarro, Ana; Gong, Jinn-Ouk; Hardeman, Sjoerd; Palma Quilodrán, Gonzalo; Patil, Subodh P. (Elsevier, 2011-01)
      The computation of the primordial power spectrum in multi-field inflaation models requires us to correctly account for all relevant interactions between adiabatic and non-adiabatic modes around and after horizon crossing. ...
    • On the integration of fields and quanta in time dependent backgrounds 
      Castillo, Esteban; Koch, Benjamin; Palma Quilodrán, Gonzalo (Springer, 2014)
      Field theories with global continuous symmetries may admit configurations in which time translation invariance is broken by the movement of homogeneous background fields evolving along the flat directions implied by the ...
    • Primordial gravitational waves from excited states 
      Fumagalli, Jacopo; Palma Quilodrán, Gonzalo; Renaux-Petel, Sébastien; Sypsas, Spyros; Witkowskia, Lukas T.; Zenteno, Cristóbal (Springer, 2022)
      We show that a scalar excited state with large occupation numbers during inflation leads to an enhancement of tensor modes and a characteristic pattern of order-one oscillations in the associated stochastic gravitational ...
    • Scale invariance of the primordial tensor power spectrum 
      Palma Quilodrán, Gonzalo; Pradenas Márquez, Bastián; Riquelme, Walter; Sypsas, Spyros (American Physical Society, 2017)
      Future cosmic microwave background polarization experiments will search for evidence of primordial tensor modes at large angular scales, in the multipole range 4≤≤50. Because in that range there is some mild evidence of ...