Zobrazeno 1 - 10
of 220
pro vyhledávání: '"Rosati, Robert"'
Autor:
Rosati, Robert, Littenberg, Tyson B.
The Laser Interferometer Space Antenna (LISA) mission poses a difficult parameter estimation challenge: the sources will be so dense in both time and frequency that they all must be fit simultaneously in a `global fit'. Successful tests of global fit
Externí odkaz:
http://arxiv.org/abs/2410.17180
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
We explore in detail the dynamics of multi-field inflationary models. We first revisit the two-field case and rederive the coordinate independent expression for the attractor solution with either small or large turn rate, emphasizing the role of isom
Externí odkaz:
http://arxiv.org/abs/2210.14900
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 investigate the observational signatures of many-field inflation and present analytic expressions for the spectral index as a function of the prior. For a given prior we employ the central limit theorem and the horizon crossing approximation to de
Externí odkaz:
http://arxiv.org/abs/1907.08095
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
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