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19912026
Showing 2003 · hep-thShow all

13 papers · 2 filters

hep-th2003★ 87 cited

Softly Massive Gravity

G. Gabadadze, M. Shifman

Large-distance modification of gravity may be the mechanism for solving the cosmological constant problem. A simple model of the large-distance modification -- four-dimensional (4D…

hep-th2003★ 69 cited

Graviton Mass or Cosmological Constant?

Gregory Gabadadze, Andrei Gruzinov

To describe a massive graviton in 4D Minkowski space-time one introduces a quadratic term in the Lagrangian. This term, however, can lead to a readjustment or instability of the ba…

hep-th2003★ 329 cited

Formation and evolution of cosmic D-strings

Gia Dvali, Alexander Vilenkin

We study the formation of D and F-cosmic strings in D-brane annihilation after brane inflation. We show that D-string formation by quantum de Sitter fluctuations is severely suppre…

hep-th2003★ 7 cited

Hidden sl(2,R) Symmetry in 2D CFTs and the Wave Function of 3D Quantum Gravity

F. Nitti, M. Porrati

We show that all two-dimensional conformal field theories possess a hidden sl(2,R) affine symmetry. More precisely, we add appropriate ghost fields to an arbitrary CFT, and we use…

hep-th2003

Reply to ``Comment on `Properties of the massive Thirring model from the XYZ spin chain' "

M. Kolanovic, S. Pallua, P. Prester

We elaborate in more details why lattice calculation in [Kolanovic et al, Phys. Rev. D 62, 025021 (2000)] was done correctly and argue that incresing the number of sites is not exp…

hep-th2003★ 59 cited

Higgs Phenomenon for the Graviton in Ads Space

M. Porrati

In this review, we summarize recent findings that show how standard 4-d Einstein gravity coupled to a conformal field theory can become massive in Anti de Sitter Space. Key ingredi…