
Семинар 15 мая 2018. Elizabeth Gould. Constraining holographic cosmology with Planck data
15 мая 2018, в 12:45 Кафедра физики высоких энергий и элементарных частиц Elizabeth Gould Constraining holographic cosmology with Planck data The holographic cosmology framework exploits holographic dualities in order to express inflationary predictions in terms of the observables of a 3D quantum field theory (QFT). If the dual QFT is strongly coupled this framework reproduces standard inflationary predictions, in particular the power spectra of primordial curvature perturbations are well approximated by the standard power law expansion, while in the opposite case of dual QFT being perturbative one obtains a new holographic expansion. We compare the two cases against the state of the art cosmological observations and show that they do equally well at l>30, where a holographic perturbative expansion can be trusted. In order to compare the model to the data for low l values, we are currently developing lattice simulations of holographic cosmology in order to model the lowl nonperturbative regime.
Отправлено Thu, 10 May 2018 18:42:20 +0400
