Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Adelberger, E G"'
Autor:
Ross, M. P., Fleischer, S. M., Paulson, I. A., Lamb, P., Iritani, B. M., Adelberger, E. G., Hagedorn, C. A., Venkateswara, K., Gettings, C., Shaw, E. A., Apple, S. K., Gundlach, J. H.
We searched for violations of the weak equivalence principle using a cryogenic torsion balance with a pendulum comprised of superconducting niobium and copper. We constrain the E\"otv\"os parameter with 95%-confidence to $\eta_{\text{Nb*-Cu}}~\leq~2.
Externí odkaz:
http://arxiv.org/abs/2407.21232
Autor:
Smith, G. L., Hoyle, C. D., Gundlach, J. H., Adelberger, E. G., Heckel, B. R., Swanson, H. E.
Publikováno v:
Physical Review D 61, 022001, 1999
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_{
Externí odkaz:
http://arxiv.org/abs/2405.10982
Autor:
Ross, M. P., Gundlach, J. H., Adelberger, E. G., Weller, C. M., Shaw, E. A., Gettings, C., Kissel, J., Mistry, T., Datrier, L., Daw, E., Hendry, M.
The precisions of existing gravitational calibrators for gravitational wave observatories are limited by their dependence on the relative position between the calibrators and the observatory's test masses. Here we present a novel geometry consisting
Externí odkaz:
http://arxiv.org/abs/2301.10836
We used a stationary torsion balance with a beryllium-aluminum composition dipole to search for ultra low-mass bosonic dark matter coupled to baryon minus lepton number. We set 95% confidence limits on the coupling constant $g_{\rm B-L}$ for bosons w
Externí odkaz:
http://arxiv.org/abs/2109.08822
We tested the gravitational $1/r^2$ law using a stationary torsion-balance detector and a rotating attractor containing test bodies with both 18-fold and 120-fold azimuthal symmetries that simultaneously tests the $1/r^2$ law at two different length
Externí odkaz:
http://arxiv.org/abs/2002.11761
Autor:
Adelberger, E. G., Battat, J. B. R., Birkmeier, K. J., Colmenares, N. R., Davis, R., Hoyle, C. D., Huang, L. R., McMillan, R. J., Murphy Jr., T. W., Schlerman, E., Skrobol, C., Stubbs, C. W., Zach, A.
Lunar laser ranging provides a number of leading experimental tests of gravitation -- important in our quest to unify General Relativity and the Standard Model of physics. The Apache Point Observatory Lunar Laser-ranging Operation (APOLLO) has for ye
Externí odkaz:
http://arxiv.org/abs/1706.09550
Publikováno v:
Phys. Rev. Lett 115 (2015) 201801
We used a torsion pendulum and rotating attractor with 20-pole electron-spin distributions to probe dipole-dipole interactions mediated by exotic pseudo-Goldstone bosons with $m_{\rm b}\leq 500 \; \mu$eV and coupling strengths up to 14 orders of magn
Externí odkaz:
http://arxiv.org/abs/1508.02463
Autor:
Adelberger, E. G.
This white paper is submitted as part of Snowmass2013 (subgroup CF2). The extraordinary sensitivity of torsion-balances can be used to search for the ultra-feeble forces suggested by attempts to unify gravity with the other fundamental interactions.
Externí odkaz:
http://arxiv.org/abs/1308.3213
Autor:
Adelberger, E. G., Wagner, T. A.
We show that a previous polarized 3He experiment at Princeton, plus Eot-Wash equivalence-principle tests, constrain exotic, long-ranged (lambda > 0.15m) parity-violating interactions of neutrons at levels well below those inferred from a recent study
Externí odkaz:
http://arxiv.org/abs/1307.6602
We briefly summarize motivations for testing the weak equivalence principle and then review recent torsion-balance results that compare the differential accelerations of beryllium-aluminum and beryllium-titanium test body pairs with precisions at the
Externí odkaz:
http://arxiv.org/abs/1207.2442