Short-range tests of the equivalence principle
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866914801637130240 |
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| author | Smith, G. L. Hoyle, C. D. Gundlach, J. H. Adelberger, E. G. Heckel, B. R. Swanson, H. E. |
| author_facet | Smith, G. L. Hoyle, C. D. Gundlach, J. H. Adelberger, E. G. Heckel, B. R. Swanson, H. E. |
| contents | We tested the equivalence principle at short length scales by rotating a 3-ton $^{238}$U attractor around a compact torsion balance containing Cu and Pb test bodies. The observed differential acceleration of the test bodies toward the attractor, $a_{\text{Cu}}-a_{\text{Pb}} =(1.0\pm2.8)\times 10^{-13}$ cm/s$^2$, should be compared to the corresponding gravitational acceleration of $9.2\times10^{-5}$ cm/s$^2$. Our results set new constraints on equivalence-principle violating interactions with Yukawa ranges down to 1 cm, and improve by substantial factors existing limits for ranges between 10 km and 1000 km. Our data also set strong constraints on certain power law potentials that can arise from two-boson exchange processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_10982 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Short-range tests of the equivalence principle Smith, G. L. Hoyle, C. D. Gundlach, J. H. Adelberger, E. G. Heckel, B. R. Swanson, H. E. General Relativity and Quantum Cosmology High Energy Physics - Phenomenology We tested the equivalence principle at short length scales by rotating a 3-ton $^{238}$U attractor around a compact torsion balance containing Cu and Pb test bodies. The observed differential acceleration of the test bodies toward the attractor, $a_{\text{Cu}}-a_{\text{Pb}} =(1.0\pm2.8)\times 10^{-13}$ cm/s$^2$, should be compared to the corresponding gravitational acceleration of $9.2\times10^{-5}$ cm/s$^2$. Our results set new constraints on equivalence-principle violating interactions with Yukawa ranges down to 1 cm, and improve by substantial factors existing limits for ranges between 10 km and 1000 km. Our data also set strong constraints on certain power law potentials that can arise from two-boson exchange processes. |
| title | Short-range tests of the equivalence principle |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.10982 |