The development of gravitational instabilities - RESCEU

Conclusions
• New methods are being developed, still in progress
• RPT, Gamma-expansion, closure theory, time-flow RG, but also with an effective
fluid approach has been proposed as a possible route to such calculations
(Baumann et al., '10);
• Which approach is the "best" (if any) is not clear yet;
• Important cross-checks with N-body codes (for various
models);
• An interesting play-ground for theoretical physicists;
• Maybe our best chance to unambiguously grasp the
nature of dark energy (in particular through detailed
analysis of 3-pts functions)