New Method for Probing Dark Energy using the Rees-Sciama Effect
  The integrated Sachs-Wolfe (ISW) effect provides us the information of the
time evolution of gravitational potential. The cross-correlation between the
cosmic microwave background (CMB) and the large scale structure (LSS) is known
as a promising way to extract the ISW effect. Compared to CMB, the matter
fluctuation can grow non-linearly and this is represented in the gravitational
potential. Compared to the linear ISW effect, this non-linear ISW effect known
as the Rees-Sciama (RS) effect shows the unique behavior by changing the
anti-correlated cross correlation between the CMB and the mass tracer into the
positively correlated cross correlation. We show that the dependence of this
flipping scale on dark energy models and it might be used as a new method to
investigate dark energy models.
