Submillimeter galaxies in the ALMA era
Chris Hayward

Since their discovery in the late 1990s, high-redshift submillimeter galaxies (SMGs) have puzzled theorists because their observed abundances and star formation rates have been difficult to reconcile with galaxy formation models. I will discuss current theoretical models for SMGs and confront them with observational data, especially recent ALMA data. In particular, I will argue that the classical picture of SMGs as merger-induced starbursts is incomplete; rather, they are a much more heterogeneous population. I will also discuss the prospects of selecting high-redshift protoclusters by using SMGs as beacons.