Chameleon dark energy can resolve the Hubble tension
  Values of the Hubble constant between the direct measurements from various
independent local observations and that inferred from the cosmic microwave
background with the $\Lambda$-cold-dark-matter model are in tension with
persistent significance. We propose a late-time inhomogeneous resolution
suggesting that a chameleon field coupled to a local overdensity of matter
could be trapped at a higher potential energy density as an effective
cosmological constant driving the local expansion rate faster than that of the
background with lower matter density. We illustrate this mechanism in a toy
model in which a region with only $20\%$ overdensity of matter is sufficient to
resolve the Hubble tension, and the Hubble constant measured by the local
distance ladders could be accommodated by the chameleon coupled to the observed
overdensities from the large-scale structure surveys.
