Higher derivative asymptotic charges and internal Lorentz symmetries

Understand

In line with a recent proposal for the study of asymptotic gravitational charges, we investigate higher derivative asymptotic charges.

• We show that the higher derivative BMS charges are related to the two-derivative BMS charges.
• Significantly, we find that internal Lorentz transformations are relevant in the higher derivative case in contrast to the two-derivative case.
• We give a prescription for their precise definition and derive the associated charges, finding, again, a relation with two-derivative BMS charges.