Tuesday, December 22, 2015

An Effective Field Theory Approach to Tidal Dynamics of Astrophysical Systems

An effective field theory approach to tidal dynamics of astrophysical systems


Endlich et al


We develop a description of tidal effects in astrophysical systems using effective field theory techniques. Our symmetry-based approach is systematic and equally capable to describe objects in the Newtonian regime (e.g. moons, rocky planets, main sequence stars, etc.) as well as relativistic objects (e.g. neutron stars and black holes). In the Newtonian limit, we recover the dynamical equations for the "weak friction model" with additional corrections due to tidal and rotational deformations.

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