Description
Abstract: The speakers before me have introduced the EMRI problem, and the
perturbative and multi-scale techniques that we use to solve the problem.
One key consideration is that we need to go to second order in our perturbative
expansion in order to model EMRIs well enough to achieve the LISA mission's
science goals. Constructing the second order self-force requires accurate first
order information, in a suitable gauge. In this talk I will talk a little about
techniques that have been used in the past to calculate first order metric
perturbations, and about some modern techniques being used, including my own
work constructing Lorenz gauge metric perturbations in Lorenz gauge through
metric reconstruction, using recent breakthrough by Wardell, Kavanagh and
Dolan.
