Light-Front Dynamics Of Massive Vector Chern-Simons Gravity
C. Aragone, P. J. Arias, A. Khoudeir

TL;DR
This paper introduces a ghost-free, diffeomorphism-invariant gravity theory with a Chern-Simons term, analyzing its properties using light-front coordinates and revealing solutions to its differential constraints.
Contribution
It develops a second order gravity action with a Chern-Simons term, performs light-front analysis, and solves differential constraints in quasi LF coordinates.
Findings
The theory propagates a pure spin-2 mode.
Differential constraints are solvable in quasi LF coordinates.
The model is ghost-free and exhibits spontaneous Lorentz symmetry breaking.
Abstract
We present a second order gravity action which consists of ordinary Einstein action augmented by a first-order, vector like, Chern-Simons quasi topological term. This theory is ghost-free and propagates a pure spin-2 mode. It is diffeomorphism invariant, although its local Lorentz invariance has been spontaneuosly broken. We perform the light-front (LF) analysis for both the linearized system and the exact curved model. In constrast to the 2+1 canonical analysis, in the quasi LF coordinates the differential constraints can be solved. Its solution is presented here.
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Taxonomy
TopicsGeophysics and Sensor Technology · Cold Atom Physics and Bose-Einstein Condensates · Quantum Electrodynamics and Casimir Effect
