Columbia University

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2008 · hep-thShow all

13 papers · 2 filters

hep-th2008★ 17 cited

Deep inelastic and dipole scattering on finite length hot $N = 4$ SYM matter

A. H. Mueller, A. I. Shoshi, Bo-Wen Xiao

Deep inelastic scattering of $R$ -currents and the scattering of a small dipole on finite length hot $N = 4$ SYM matter are discussed. In each case we find the sca…

hep-th2008★ 53 cited

A Model Independent Ultraviolet Cutoff for Theories with Charged Massive Higher Spin Fields

Massimo Porrati, Rakibur Rahman

We argue that the theory of a massive higher spin field coupled to electromagnetism in flat space possesses an intrinsic, model independent, finite upper bound on its UV cutoff. By…

hep-th2008★ 1.9k cited

The galileon as a local modification of gravity

Alberto Nicolis, Riccardo Rattazzi, Enrico Trincherini

In the DGP model, the ``self-accelerating'' solution is plagued by a ghost instability, which makes the solution untenable. This fact as well as all interesting departures from GR…

hep-th2008★ 19 cited

BPS Magnetic Monopole Bags

Ki-Myeong Lee, Erick J. Weinberg

We explore the characteristics of spherical bags made of large numbers of BPS magnetic monopoles. There are two extreme limits. In the Abelian bag, $N$ zeros of the Higgs field are…

hep-th2008★ 23 cited

Bouncing and cyclic string gas cosmologies

Brian Greene, Daniel Kabat, Stefanos Marnerides

We show that, in the presence of a string gas, simple higher-derivative modifications to the effective action for gravity can lead to bouncing and cyclic cosmological models. The m…

hep-th2008★ 14 cited

Boom and Bust Inflation: a Graceful Exit via Compact Extra Dimensions

Adam R. Brown

A model of inflation is proposed in which compact extra dimensions allow a graceful exit without recourse to flat potentials or super-Planckian field values. Though bubbles of true…

hep-th2008★ 78 cited

On the exact solution of the accelerating string in $A d S_{5}$ space

Bo-Wen Xiao

In this letter, the exact accelerating string solution of a heavy quark-antiquark pair is found in $A d S_{5}$ space. On the accelerating string, there is a particular scale which sepa…

hep-th2008★ 157 cited

Jet evolution in the N=4 SYM plasma at strong coupling

Y. Hatta, E. Iancu, A. H. Mueller

Within the framework of the AdS/CFT correspondence, we study the time evolution of an energetic R-current propagating through a finite temperature, strongly coupled, N=4 SYM plasma…

hep-th2008★ 5 cited

Instabilities of chromodyons in SO(5) gauge theory

Huidong Guo, Erick J. Weinberg

Attempts to construct chromodyons - objects with both magnetic charge and non-Abelian electric charge - in the context of spontaneously broken gauge theories have been thwarted in…

hep-th2008★ 25 cited

On Super-Planckian Fields at Sub-Planckian Energies

Alberto Nicolis

For a light scalar coupled to gravity, I study the gravitational backreaction associated with large field variations. I show a generic obstruction in sourcing a super-Planckian sca…

hep-th2008★ 81 cited

Simple Bounds from the Perturbative Regime of Inflation

Louis Leblond, Sarah Shandera

We examine the conditions under which a perturbative expansion around an inflating background is valid. When inflation is driven by a single field with a general sound speed, we fi…

hep-th2008★ 77 cited

The Phase Transition to Eternal Inflation

Paolo Creminelli, Sergei Dubovsky, Alberto Nicolis +2

For slow-roll inflation we study the phase transition to the eternal regime. Starting from a finite inflationary volume, we consider the volume of the universe at reheating as orde…