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18 papers · 2 filters
p-adic Inflation
Neil Barnaby, Tirthabir Biswas, James M. Cline
We construct approximate inflationary solutions rolling away from the unstable maximum of p-adic string theory, a nonlocal theory with derivatives of all orders. Novel features inc…
Uplifting and Inflation with D3 Branes
Cliff P. Burgess, James M. Cline, Keshav Dasgupta +1
Back-reaction effects can modify the dynamics of mobile D3 branes moving within type IIB vacua, in a way which has recently become calculable. We identify some of the ways these ef…
Non-perturbative Gravity, Hagedorn Bounce & CMB
Tirthabir Biswas, Robert Brandenberger, Anupam Mazumdar +1
In hep-th/0508194 it was shown how non-perturbative corrections to gravity can resolve the big bang singularity, leading to a bouncing universe. Depending on the scale of the non-p…
Dielectric (p,q) Strings in a Throat
Hassan Firouzjahi
We calculate the (p,q) string spectrum in a warped deformed conifold using the dielectric brane method. The spectrum is shown to have the same functional form as in the dual pictur…
Kicking the Rugby Ball: Perturbations of 6D Gauged Chiral Supergravity
C. P. Burgess, C. de Rham, D. Hoover +2
We analyze the axially-symmetric scalar perturbations of 6D chiral gauged supergravity compactified on the general warped geometries in the presence of two source branes. We find a…
Dipole-Deformed Bound States and Heterotic Kodaira Surfaces
Keshav Dasgupta, Josh Guffin, Rhiannon Gwyn +1
We study a particular N = 1 confining gauge theory with fundamental flavors realised as seven branes in the background of wrapped five branes on a rigid two-cycle of a non-trivial…