Excursion set theory for modified gravity: correlated steps, mass
  functions and halo bias
  We show how correlated steps introduces significant contributions to the
modification of the halo mass function in modified gravity models, taking the
chameleon models as an example, in the framework of the excursion set approach.
This correction applies to both Lagrangian and Eulerian environments discussed
in previous studies. Correlated steps also enhances the modifications due to
the fifth force in the conditional mass function as well as the halo bias. We
found that abundance and clustering measurements from different environments
can provide strong constraints on the chameleon models.
