Physics beyond the Standard Model from hydrogen spectroscopy
作者： W. Ubachs , J.C.J. Koelemeij , K.S.E. Eikema , E.J. Salumbides
DOI: 10.1016/J.JMS.2015.12.003
关键词:
摘要: Abstract Spectroscopy of hydrogen can be used for a search into physics beyond the Standard Model. Differences between absorption spectra Lyman and Werner bands H2 as observed at high redshift those measured in laboratory interpreted terms possible variations proton–electron mass ratio μ = m p / e over cosmological history. Investigation ten such absorbers range z 2.0 –4.2 yields constraint | Δ 5 × 10 - 6 3σ. Observation from photospheres white dwarf stars inside our Galaxy delivers similar magnitude on dependence gravitational potential 4 times strong Earth’s surface. While astronomical studies aim finding quintessence an indirect manner, precision measurements target additional quantum fields direct manner. Laser-based dissociation energies, vibrational splittings rotational level energies molecules their deuterated isotopomers HD D2 produce values rovibrational binding fully consistent with ab initio calculations including relativistic electrodynamical (QED) effects. Similarly, high-overtone transitions HD+ ions, captured ion traps sympathetically cooled to mK temperatures, also result transition frequencies QED corrections. Precision inter-Rydberg extrapolated yield accurate H 2 + -ion. These comprehensive results neutral ionic set bounds existence fifth forces higher dimensions, phenomena describing
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