42 citations · 116 across the 4 of their papers we have counts for
4 papers
DBI Global Strings
Sash Sarangi
In this note we present global string solutions which are a generalization of the usual field theory global vortices when the kinetic term is DBI. Such vortices can result from the…
Rapid Tunneling and Percolation in the Landscape
Sash Sarangi, Gary Shiu, Benjamin Shlaer
Motivated by the possibility of a string landscape, we reexamine tunneling of a scalar field across single/multiple barriers. Recent investigations have suggested modifications to…
Exact spectrum of scalar field perturbations in a radiation deformed closed de Sitter universe
Sash Sarangi, Koenraad Schalm, Gary Shiu +1
We observe that the equation of motion for a free scalar field in a closed universe with radiation and a positive cosmological constant is given by Lamé's equation. Computing the e…
Is Brane Inflation Eternal?
Xingang Chen, Sash Sarangi, S. -H. Henry Tye +1
In this paper, we show that eternal inflation of the random walk type is generically absent in the brane inflationary scenario. Depending on how the brane inflationary universe ori…