Top quark pair production at the LHC in ATLAS

Measurements of the properties of top quark pair production in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. Cross section measurements in all available decay modes will be presented, where the main focus is on measurements of differential spectra, in particular, measurements that are able to constrain the modelling of additional parton radiation like the jet multiplicity distribution. Measurements of the top-quark mass, charge and polarisation, as well as of the polarization of W bosons in top quark decays to probe the Wtb-vertex are presented. In addition, measurements of the spin correlation between top and anti-top quarks as well as of the top-quark charge asymmetry, which constitute important tests of QCD and are sensitive to new physics, are discussed. The search for flavour changing neutral current processes in top quark decays is reviewed. We also discuss top production in association with bosons. Prospects at HL-LHC will also be discussed as an outlook.