Семинар 15 мая 2018. Elizabeth Gould. Constraining holographic cosmology with Planck data

*by: , @ Thu, 10 May 2018 18:42:20 +0400*

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 low-l non-perturbative regime.