113 citations · 478 across the 8 of their papers we have counts for
8 papers
MultiModeCode: An efficient numerical solver for multifield inflation
Layne C. Price, Jonathan Frazer, Jiajun Xu +2
We present MultiModeCode, a Fortran 95/2000 package for the numerical exploration of multifield inflation models. This program facilitates efficient Monte Carlo sampling of prior p…
Effective Field Theory and Decoupling in Multi-field Inflation: An Illustrative Case Study
Gary Shiu, Jiajun Xu
We explore the effects of heavy degrees of freedom on the evolution and perturbations of light modes in multifield inflation. We use a simple two-field model as an example to illus…
A Brachistochrone Approach to Reconstruct the Inflaton Potential
Daniel Wohns, Jiajun Xu, S. -H. Henry Tye
We propose a new way to implement an inflationary prior to a cosmological dataset that incorporates the inflationary observables at arbitrary order. This approach employs an expone…
Comment on Asymptotically Safe Inflation
S. -H. Henry Tye, Jiajun Xu
We comment on Weinberg's interesting analysis of asymptotically safe inflation (arXiv:0911.3165). We find that even if the gravity theory exhibits an ultraviolet fixed point, the e…
A Meandering Inflaton
S. -H. Henry Tye, Jiajun Xu
If the cosmological inflationary scenario took place in the cosmic landscape in string theory, the inflaton, the scalar mode responsible for inflation, would have meandered in a co…
Duality Cascade in Brane Inflation
Rachel Bean, Xingang Chen, Girma Hailu +2
We show that brane inflation is very sensitive to tiny sharp features in extra dimensions, including those in the potential and in the warp factor. This can show up as observationa…