Lorentz violating backgrounds from quadratic, shift-symmetric, ultralight dark matter

Jiang, Minyuan; Pecjak, Benjamin D.; Perez, Gilad; Sankaranarayanan, Somasundaram

Abstract

We consider an effective theory for a shift-symmetric, quadratically-coupled, ultralight spin-0 field. The leading CP conserving interactions with Standard Model fields in the effective theory arise at dimension 8. We discuss the renormalization group evolution and positivity bounds on these operators, as well as their possible UV origins. Assuming that the spin-0 field is associated with an ultralight dark matter candidate, we discuss the effects of the dimension-8 operators on experiments searching for the oscillation of fundamental constants and Lorentz violation. We find that the direct bounds on these two effects are of similar strength but rather weak, corresponding to a UV cutoff scale of keV order, as they are mediated by dimension-8 operators.

Citation

Jiang, M., Pecjak, B. D., Perez, G., & Sankaranarayanan, S. (2024). Lorentz violating backgrounds from quadratic, shift-symmetric, ultralight dark matter. Journal of High Energy Physics, 2024(8), Article 114. https://doi.org/10.1007/jhep08%282024%29114

• Journal Article Type: Article
• Acceptance Date: Jul 30, 2024
• Online Publication Date: Aug 14, 2024
• Publication Date: Aug 14, 2024
• Deposit Date: Aug 21, 2024
• Publicly Available Date: Aug 21, 2024
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2024
• Issue: 8
• Article Number: 114
• DOI: https://doi.org/10.1007/jhep08%282024%29114
• Keywords: Effective Field Theories, Axions and ALPs, New Light Particles, Violation of Lorentz and/or CPT Symmetry
• Public URL: https://durham-repository.worktribe.com/output/2760878