Zobrazeno 1 - 10 of 49 pro vyhledávání: '"Jeroen C. J. Koelemeij"'
2
Self-consistent extraction of spectroscopic bounds on light new physics
Autor: Cédric Delaunay, Jean-Philippe Karr, Teppei Kitahara, Jeroen C. J. Koelemeij, Yotam Soreq, Jure Zupan
Publikováno v: Delaunay, C, Karr, J P, Kitahara, T, Koelemeij, J C J, Soreq, Y & Zupan, J 2023, ' Self-Consistent Extraction of Spectroscopic Bounds on Light New Physics ', Physical review letters, vol. 130, no. 12, 121801, pp. 1-8 . https://doi.org/10.1103/PhysRevLett.130.121801
Physical review letters, 130(12):121801, 1-8. American Physical Society
INSPIRE-HEP
Physical Review Letters
Physical Review Letters, 2023, 130 (12), pp.121801. ⟨10.1103/PhysRevLett.130.121801⟩
Fundamental physical constants are determined from a collection of precision measurements of elementary particles, atoms and molecules. This is usually done under the assumption of the Standard Model~(SM) of particle physics. Allowing for light new p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26194104debc95cab988d7519439d676
http://cds.cern.ch/record/2838004
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3
Proton-electron mass ratio from laser spectroscopy of HD+ at the part-per-trillion level
Autor: M. Haidar, M. Germann, Wim Ubachs, Kjeld S. E. Eikema, Vladimir I. Korobov, Sayan Patra, F. M. J. Cozijn, Laurent Hilico, Jeroen C. J. Koelemeij, J.-Ph. Karr
Publikováno v: Science
Patra, S, Germann, M, Karr, J P, Haidar, M, Hilico, L, Korobov, V I, Cozijn, F M J, Eikema, K S E, Ubachs, W & Koelemeij, J C J 2020, ' Proton-electron mass ratio from laser spectroscopy of HD + at the part-per-trillion level ', Science (New York, N.Y.), vol. 369, no. 6508, pp. 1238-1241 . https://doi.org/10.1126/science.aba0453
Science (New York, N.Y.), 369(6508), 1238-1241. American Association for the Advancement of Science
Science, 2020, 369 (6508), pp.1238-1241. ⟨10.1126/science.aba0453⟩
A very precise ratio The value of the ratio of the masses of the proton and the electron has a bearing on the values of other physical constants. This ratio is known to a very high precision. Patra et al. improved this precision even further by measu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e7d3e0577870276d50f4193b8ab03e2
https://research.vu.nl/en/publications/845375fd-559f-44d0-9760-010845a5d068
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4
A hybrid optical–wireless network for decimetre-level terrestrial positioning
Autor: Jeroen C. J. Koelemeij, Han Dun, Cherif E. V. Diouf, Erik F. Dierikx, Gerard J. M. Janssen, Christian C. J. M. Tiberius
Publikováno v: Nature, 611(7936), 473-478. Nature Publishing Group
Koelemeij, J C J, Dun, H, Diouf, C E V, Dierikx, E F, Janssen, G J M & Tiberius, C C J M 2022, ' A hybrid optical–wireless network for decimetre-level terrestrial positioning ', Nature, vol. 611, no. 7936, pp. 473-478 . https://doi.org/10.1038/s41586-022-05315-7
Global navigation satellite systems (GNSS) are widely used for navigation and time distribution, features indispensable for critical infrastructure such as mobile communication networks, as well as emerging technologies like automated driving and sus
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4d2fd5b289ca188260ce09cffc37d58
http://resolver.tudelft.nl/uuid:4b4113a2-6dda-407d-b3a6-64665154273e
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6
Three-body QED test and fifth-force constraint from vibrations and rotations of HD+
Autor: Sayan Patra, J.-Ph. Karr, M. Germann, Wim Ubachs, K.S.E. Eikema, Vladimir I. Korobov, Jeroen C. J. Koelemeij, Laurent Hilico, Edcel J. Salumbides
Publikováno v: Physical Review Research
Phys.Rev.Res.
Phys.Rev.Res., 2021, 3 (2), pp.L022028. ⟨10.1103/PhysRevResearch.3.L022028⟩
Physical Review Research, 3(2):L022028, 1-6. American Physiological Society
Physical Review Research, 2021, 3 (2), pp.L022028. ⟨10.1103/PhysRevResearch.3.L022028⟩
Germann, M, Patra, S, Karr, J P, Hilico, L, Korobov, V I, Salumbides, E J, Eikema, K S E, Ubachs, W & Koelemeij, J C J 2021, ' Three-body QED test and fifth-force constraint from vibrations and rotations of HD+ ', Physical Review Research, vol. 3, no. 2, L022028, pp. 1-6 . https://doi.org/10.1103/PhysRevResearch.3.L022028
International audience; We present a parts-per-million test of quantum electrodynamics (QED) in the HD+ molecular hydrogen ion, improving on previous tests based on vibrational and rotational transitions by factors of 76 and 1.4, respectively. The te
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7
Precise measurement of deuteron mass raises hopes of solving the nuclear-mass puzzle
Autor: Jeroen C. J. Koelemeij
Publikováno v: Nature. 585:35-36
Contradictory values for the masses of atomic nuclei have cast doubt on the reliability of these widely used quantities. A new mass measurement of the deuteron, the second-simplest atomic nucleus, clarifies the situation. The mass of the second-simpl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5aed69ceb9f11d6546c3007f5c8fc33
https://doi.org/10.1038/d41586-020-02474-3
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8
Dwingeloo Telescope has Fringes (Again)
Autor: Chantal van Tour, Jeroen C. J. Koelemeij, Rob Smets, Paul Boven, Arpad Szomoru
Publikováno v: Proceedings of 14th European VLBI Network Symposium & Users Meeting — PoS(EVN2018).
The Cleopatra workpackage of the ASTERICS project aims to address the common challenge of time and frequency distribution in distributed instruments and multi-messenger astronomy. We have made improvements to the open hardware 'White Rabbit' time and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67b2415c65f33808b98914ef11d15ed4
https://doi.org/10.22323/1.344.0156
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9
Optical Fiber Trans-national Time Transfer for Comparing Two UTC Realisations
Autor: E. Dierikx, B. Burger, A. Savencu, Jeroen C. J. Koelemeij, F. Coutereel, P. Waller, H. Piree, M. van Veghel, C. van Tour, A. Plantinga, J. Weber, R. Valceschini, Y. Xie
Publikováno v: 2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC).
A trans-national optical fiber time transfer link, based on the White Rabbit Precision Time Protocol has between established between the UTC timescale realizations of the Belgian Metrology Service (SMD) in Brussels, Belgium and the ESTEC Radio Naviga
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::adc94e94e90f57840a706b791d3df05a
https://doi.org/10.1109/fcs.2019.8856091
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10
Physics beyond the Standard Model from hydrogen spectroscopy
Autor: Kjeld S. E. Eikema, Edcel J. Salumbides, Jeroen C. J. Koelemeij, Wim Ubachs
Publikováno v: Journal of Molecular Spectroscopy, 320, 1-12. Academic Press Inc.
Journal of Molecular Spectroscopy
Ubachs, W M G, Koelemeij, J C J, Eikema, K S E & Salumbides, E J 2016, ' Physics beyond the Standard Model from hydrogen spectroscopy ', Journal of Molecular Spectroscopy, vol. 320, pp. 1-12 . https://doi.org/10.1016/j.jms.2015.12.003
Spectroscopy of hydrogen can be used for a search into physics beyond the Standard Model. Differences between the absorption spectra of H$_2$ as observed at high redshift and those measured in the laboratory can be interpreted in terms of possible va
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