Search for exotics long-lived particles with ATLAS at the LHC

Data taken in 2011 with the ATLAS detector at the Large Hadron Collider have been used to search for physics beyond the Standard Model. Results are presented based on a luminosity of 2 fb$^-1$ of $\sqrt{s}=7$ TeV proton-proton collisions focusing on final states with exotic long-lived neutral particles. No evidence of new physics is found.