Aspects and applications of nonlocal Lorentz-violation
arXiv:2008.10525 · doi:10.1103/PhysRevD.102.095006
Abstract
We consider simple scalar theories with quadratic terms that are nonlocal and Lorentz violating. Unlike similar Lorentz-invariant nonlocal theories that we have considered previously, the theories studied here are both ghost-free and unitary as formulated in Minkowski space. We explore the possibility that the scale of nonlocality could be low in a dark sector, where the stringent constraints on the violation of Lorentz invariance may be accommodated via the weak coupling to the standard model. We point out that long-range forces may originate from such a sector and be distinguishable from more conventional beyond-the-standard model possibilities. We present a model in which a nonlocal, Lorentz-violating dark sector communicates with the standard model via a sector of heavy vector-like fermions, a concrete framework in which phenomenological constraints and signals can be investigated.
arXiv comment21 pages, 2 pdf figures. v2: minor corrections, added references
References in corpus (25)
- The Confrontation between General Relativity and Experiment
- Quantum Gravity at a Lifshitz Point
- Data Tables for Lorentz and CPT Violation
- High-Energy Tests of Lorentz Invariance
- Towards singularity and ghost free theories of gravity
- Super-renormalizable Quantum Gravity
- Re-Evaluation of the Elastic Scattering of Supersymmetric Dark Matter
- Stellar cooling bounds on new light particles: plasma mixing effects
- The Lee-Wick Standard Model
- What Do We Know About Lorentz Invariance?
- On singularities of spherically symmetric backgrounds in string theory
- On Lorentz violation in Horava-Lifshitz type theories
- Ghost-free infinite derivative quantum field theory
- Behavior of the Newtonian potential for ghost-free gravity and singularity-free gravity
- Universally Finite Gravitational & Gauge Theories
- New tests of local Lorentz invariance of gravity with small-eccentricity binary pulsars
- Towards LHC Physics with Non-local Standard Model
- The gravitational field of static p-branes in linearized ghost-free gravity
- Search for the effect of massive bodies on atomic spectra and constraints on Yukawa-type interactions of scalar particles
- Finite quantum gauge theories
- Effective delta sources and regularity in higher-derivative and ghost-free gravity
- Unitarity and microscopic acausality in a nonlocal theory
- Nonlocal N=1 Supersymmetry
- On thermal field fluctuations in ghost-free theories
- Infinitesimally Nonlocal Lorentz Violation