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81 papers · 1 filter
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…
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…
Analytic calculation of color-Coulomb potential and color confinement
Daniel Zwanziger
We develop a calculational scheme in Coulomb and temporal gauge that respects gauge invariance and is most easily applied to the infrared asymptotic region of QCD. It resembles the…
Preparing Red-Green-Blue (RGB) Images from CCD Data
Robert Lupton, Michael R. Blanton, George Fekete +4
We present a new, and we believe arguably correct, algorithm for producing Red-Green-Blue (RBG) composites from 3-band astronomical images. Our method ensures that an object with a…
Probing Primordial Non-Gaussianity with Large-Scale Structure
Roman Scoccimarro, Emiliano Sefusatti, Matias Zaldarriaga
We consider primordial non-Gaussianity due to quadratic corrections in the gravitational potential parametrized by a non-linear coupling parameter fnl. We study constraints on fnl…
Rotating Concentric Circular Peakons
Darryl D. Holm, Vakhtang Putkaradze, Samuel N. Stechmann
We study invariant manifolds of measure-valued solutions of the partial differential equation for geodesic flow of a pressureless fluid. These solutions describe interaction dynami…