Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Paban, Sonia"'
Several missions following Planck are currently under development, which will provide high-precision measurements of the Cosmic Microwave Background (CMB) anisotropies. Specifically, measurements of the E modes will become nearly limited by cosmic va
Externí odkaz:
http://arxiv.org/abs/2411.03459
We study the contribution of large scalar perturbations sourced by a sharp feature during cosmic inflation to the stochastic gravitational wave background (SGWB), extending our previous work to include the SGWB sourced during the inflationary era. We
Externí odkaz:
http://arxiv.org/abs/2409.09023
The detection of a primordial stochastic gravitational wave background has the potential to reveal unprecedented insights into the early universe, and possibly into the dynamics of inflation. Generically, UV-complete inflationary models predict an ab
Externí odkaz:
http://arxiv.org/abs/2304.00065
Strongly non-geodesic, or rapidly turning trajectories in multifield inflation have attracted much interest recently from both theoretical and phenomenological perspectives. Most models with large turning rates in the literature are formulated as eff
Externí odkaz:
http://arxiv.org/abs/2110.05516
There are well-known criteria on the potential and field-space geometry for determining if slow-roll, slow-turn, multi-field inflation is possible. However, even though it has been a topic of much recent interest, slow-roll, rapid-turn inflation only
Externí odkaz:
http://arxiv.org/abs/2010.15933
We present two families of multi-field potentials that support inflation while satisfying the refined de Sitter and the distance swampland conjectures. Both families feature Planck-compatible phenomenology. The first is a helix-type potential, in a f
Externí odkaz:
http://arxiv.org/abs/1905.07495
Autor:
Paban, Sonia, Rosati, Robert
We study multi-field inflation in random potentials generated via a non-equilibrium random matrix theory process. We make a novel modification of the process to include correlations between the elements of the Hessian and the height of the potential,
Externí odkaz:
http://arxiv.org/abs/1807.07654
Publikováno v:
Phys. Rev. D 97, 045017 (2018)
Coleman and De Luccia (CDL) showed that gravitational effects can prevent the decay by bubble nucleation of a Minkowski or AdS false vacuum. In their thin-wall approximation this happens whenever the surface tension in the bubble wall exceeds an uppe
Externí odkaz:
http://arxiv.org/abs/1711.06776
Autor:
Distler, Jacques, Paban, Sonia
We previously remarked that when an observable A has a continuous spectrum, then von Neumann's formula for the post-measurement state needs to be extended and the correct formula ineluctably involves the resolution of the detector used in the measure
Externí odkaz:
http://arxiv.org/abs/1702.01724
Autor:
Clough, Katy, Lim, Eugene A., DiNunno, Brandon S., Fischler, Willy, Flauger, Raphael, Paban, Sonia
Publikováno v:
JCAP 1709 (2017) no.09, 025
We consider the effects of inhomogeneous initial conditions in both the scalar field profile and the extrinsic curvature on different inflationary models. In particular, we compare the robustness of small field inflation to that of large field inflat
Externí odkaz:
http://arxiv.org/abs/1608.04408