Well-Posed Formulation of Scalar-Tensor Effective Field Theory.
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Kovács, Áron D
Reall, Harvey S
Abstract
Effective field theory provides a way of parametrizing strong-field deviations from general relativity that might be observable in the gravitational waves emitted in a black hole merger. To perform numerical simulations of mergers in such theories it is necessary that the equations be written in a form that admits a well-posed initial value formulation. We study gravity coupled to a scalar field including the leading (four-derivative) effective field theory corrections. We introduce a new class of "modified harmonic" gauges and gauge-fixed equations of motion, such that, at weak coupling, the equations are strongly hyperbolic and therefore admit a well-posed initial value formulation.
Description
Keywords
gr-qc, gr-qc, hep-th
Journal Title
Phys Rev Lett
Conference Name
Journal ISSN
0031-9007
1079-7114
1079-7114
Volume Title
124
Publisher
American Physical Society (APS)
Publisher DOI
Rights
All rights reserved
Sponsorship
Science and Technology Facilities Council (ST/P000681/1)
Science and Technology Facilities Council (ST/P000673/1)
STFC (ST/T000694/1)
Science and Technology Facilities Council (ST/P000673/1)
STFC (ST/T000694/1)
STFC Grants PHY-1504541 and ST/P000681/1