341 citations · 4.8k across the 57 of their papers we have counts for
13 papers · 1 filter
Robustness of Inflation to Large Tensor Perturbations
Katy Clough, Raphael Flauger, Eugene A. Lim
Extending our previous work on the robustness of inflation to perturbations in the scalar field, we investigate the effects of perturbations in the transverse traceless part of the…
Robustness of Inflation to Inhomogeneous Initial Conditions
Katy Clough, Eugene A. Lim, Brandon S. DiNunno +3
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 Quantum Information of Cosmological Correlations
Eugene A. Lim
It has been shown that the primordial perturbations sourced by inflation are driven to classicality by unitary evolution alone. However, their coupling with the environment such as…
A Clash of Kinks: Phase shifts in colliding non-integrable solitons
Mustafa A. Amin, Eugene A. Lim, I-Sheng Yang
We derive a closed-form expression for the phase shift experienced by 1+1 dimensional kinks colliding at ultra-relativistic velocities (gamma v >> 1), valid for arbitrary periodic…
A scattering theory of ultrarelativistic solitons
Mustafa A. Amin, Eugene A. Lim, I-Sheng Yang
We construct a perturbative framework for understanding the collision of solitons (more precisely, solitary waves) in relativistic scalar field theories. Our perturbative framework…
Higher derivative theories with constraints : Exorcising Ostrogradski's Ghost
Tai-jun Chen, Matteo Fasiello, Eugene A. Lim +1
We prove that the linear instability in a non-degenerate higher derivative theory, the Ostrogradski instability, can only be removed by the addition of constraints if the original…