Observational Constraints on Kinetic Gravity Braiding from the
  Integrated Sachs-Wolfe Effect
  The cross-correlation between the integrated Sachs-Wolfe (ISW) effect and the
large scale structure (LSS) is a powerful tool to constrain dark energy and
alternative theories of gravity. In this paper, we obtain observational
constraints on kinetic gravity braiding from the ISW-LSS cross-correlation. We
find that the late-time ISW effect in the kinetic gravity braiding model
anti-correlates with large scale structures in a wide range of parameters,
which clearly demonstrates how one can distinguish modified gravity theories
from the LCDM model using the ISW effect. In addition to the analysis based on
a concrete model, we investigate a future prospect of the ISW-LSS
cross-correlation by using a phenomenological parameterization of modified
gravity models.
