| Abstract: | We provide an updated assessment of the fundamental physics potential of
LISA. Given the very broad range of topics that might be relevant to LISA, we
present here a sample of what we view as particularly promising directions,
based in part on the current research interests of the LISA scientific
community in the area of fundamental physics. We organize these directions
through a ’’science-first’’ approach that allows us to classify how LISA data
can inform theoretical physics in a variety of areas. For each of these
theoretical physics classes, we identify the sources that are currently
expected to provide the principal contribution to our knowledge, and the areas
that need further development. The classification presented here should not be
thought of as cast in stone, but rather as a fluid framework that is amenable
to change with the flow of new insights in theoretical physics. |
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