Model-Independent Perspectives on Coupled Dark Energy and the Swampland
  We present a general model-independent approach to study the coupled dark
energy and the string Swampland criteria. We show how the dark sector
interaction is degenerated with the equation of state of dark energy in the
context of the expansion of the Universe. With priors for either of them, the
dynamics of dark energy and the dark sector interactions can be reconstructed
together with the bounds of the Swampland criteria. Combining cosmic
chronometers, baryon acoustic oscillation (BAO), and Type Ia supernovae our
results suggest a mild $1 \sigma$ significance of dark sector interactions at
low redshift for the coupled quintessence. The Lyman-$\alpha$ BAO at $z=2.34$
leads a $2 \sigma$ signal of nonzero interactions at high redshift. The
implications for coupled quintessence are discussed.
