  Using truth-level Monte Carlo simulations of particle interactions in a large
volume of liquid argon, we demonstrate physics capabilities enabled by
reconstruction of topologically compact and isolated low-energy features, or
`blips,' in large liquid argon time projection chamber (LArTPC) events. These
features are mostly produced by electron products of photon interactions
depositing ionization energy. The blip identification capability of the LArTPC
is enabled by its unique combination of size, position resolution precision,
and low energy thresholds. We show that consideration of reconstructed blips in
LArTPC physics analyses can result in substantial improvements in calorimetry
for neutrino and new physics interactions and for final-state particles ranging
in energy from the MeV to the GeV scale. Blip activity analysis is also shown
to enable discrimination between interaction channels and final-state particle
types. In addition to demonstrating these gains in calorimetry and
discrimination, some limitations of blip reconstruction capabilities and
physics outcomes are also discussed.
