2018-2019

6 October 2018, 3pm, LPS seminar room

Chip Sebens (Caltech), “The Mass of the Gravitational Field”

By mass-energy equivalence, the gravitational field has a relativistic mass density proportional to its energy density. I seek to better understand this mass of the gravitational field by asking whether it plays three traditional roles of mass: the role in conservation of mass, the inertial role, and the role as source for gravitation. The difficult case of general relativity is compared to the more straightforward cases of Newtonian gravity and electromagnetism by way of gravitoelectromagnetism, a special relativistic theory of gravity which resembles electromagnetism.

Please read Chip’s draft manuscript in preparation for the meeting.