Document detail
ID
oai:arXiv.org:2407.12905
Topic
High Energy Physics - Theory Astrophysics - Cosmology and Nonga... General Relativity and Quantum Cos...Author
González, Mariana Carrillo Lipstein, Arthur Nagy, SilviaCategory
sciences: astrophysics
Year
2024
listing date
7/24/2024
Keywords
flrw backgrounds cosmologyAbstract
We construct cosmological spacetimes with a self-dual Weyl tensor whose dynamics are described by conformally coupled scalars with only cubic self-interactions.
Similar to the previously discovered cases in flat and (Anti) de Sitter backgrounds, the interactions are characterized by a bracket that encodes a kinematic algebra.
We discuss how the color-kinematics duality and double copy are realized in these cosmological backgrounds.
If we further impose that the Ricci scalar is that of an FLRW spacetime, we find two new self-dual metrics corresponding to radiation-dominated and coasting (non-accelerating) FLRW backgrounds.
Relaxing this requirement, we find an infinite family of solutions given by three different conformal classes of cosmological self-dual metrics.
These solutions approximate those of FLRW as long as we impose a simple additional constraint on the scalar theory.
;Comment: 17 pages + apendices
González, Mariana Carrillo,Lipstein, Arthur,Nagy, Silvia, 2024, Self-Dual Cosmology
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