Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster VII
Q 56.41: Poster
Donnerstag, 14. März 2024, 17:00–19:00, KG I Foyer
spin-dependent exotic interactions — •lei cong1,2, wei ji1,2, pavel fadeev1, filip ficek1, min jiang1, victor v. flambaum1, haosen guan1, derek f. jackson kimball1, mikhail g. kozlov1, yevgeny v. stadnik1, and dmitry budker1 — 1Helmholtz-Institut, Mainz 55128, Germany, and others — 2Equal contribution
The fifth force may arise due to “new physics” beyond the standard model. We focus on the spin-dependent fifth forces that are mediated by new particles, such as spin-0 particles (axion and axion-like-particles) and spin-1 particles (e.g. light Z’ particle or massless paraphoton). These new ultralight particles are also candidates for dark matter and dark energy, and may also break fundamental symmetries. Spin-dependent interactions between fermions have been extensively searched for in experiments, employing methods such as comagnetometers, nitrogen-vacancy spin sensors, and precision measurements of atomic and molecular spectra [1, 2, 3]. Our research involves a theoretical reassessment of exotic spin-dependent forces [4]. It produces a systematic and complete set of interaction potentials expressed in terms of reduced coupling constants. We will conduct an extensive analysis of the existing body of experimental literature on spin-dependent fifth forces, which will produce systematic exclusion plots. This will lead to a comprehensive understanding of the current research landscape and provide insights for further research.
References: [1] Wei Ji, et al. PRL, 130, 133202, 2023. [2] Xing Rong, et al. NC, 9, 739, 2018. [3] Filip Ficek, et al. PRL, 120, 183002, 2018. [4] Pavel Fadeev, et al. PRA, 99, 022113, 2019.
Keywords: precision measurements; exotic particles; spin-dependent fifth forces; beyond-the-standard-model physics