  Results of a search for new phenomena in events with an energetic photon and
large missing transverse momentum in proton-proton collisions at sqrt(s)=7 TeV
are reported. Data collected by the ATLAS experiment at the LHC corresponding
to an integrated luminosity of 4.6 fb-1 are used. Good agreement is observed
between the data and the Standard Model predictions. The results are translated
into exclusion limits on models with large extra spatial dimensions and on pair
production of weakly interacting dark matter candidates.
