The future linear e+e- colliders offer a number of unique opportunities for searches for dark matter and dark sector particles. The collider program itself will offer important capabilities on three frontiers: (i) the precision frontier with measurements at the Higgs factory, (ii) the energy frontier with direct investigations of the scalar sector, and (iii) the intensity frontier with fixed-target and beam-dump measurements. In the seminar I will concentrate mostly on (ii) but also comment on possible experiments in (i) and (iii), which altogether address various dark sector portals.
[The seminar will be recorded]
With support from FCT through project UIDB/00777/2020