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Probing Physics beyond the Standard Model from Molecules

Total Cost €


EC-Contrib. €






 NEWPHYS-MOLECULES project word cloud

Explore the words cloud of the NEWPHYS-MOLECULES project. It provides you a very rough idea of what is the project "NEWPHYS-MOLECULES" about.

measurable    breaking    model    themselves    dimensions    deviations    spaces    dwarf    hitherto    drifts    existence    qed    origin    shifts    domain    constants    ground    mystery    investigation    atoms    underlying    gravity    molecule    structures    phenomena    science    perform    radio    calls    white    calculations    length    theory    scan    unknown    forces    fundamental    stars    atomic    uv    metrology    explored    density    confronted    incomplete    chameleon    redirected    dark    shortcomings    theories    enhanced    search    scenarios    31    compactified    vibration    ouml    galaxy    unexplored    territory    standard    either    manifest    experimental    uncovered    universe    dimensional    precision    probes    dependence    complexity    view    searching    time    tuned    molecules    h2    consistent    aring    environmental    cover    dependencies    tone    physics    extra    explained    varying    methanol    symmetry    quantum    gravitational    energy    finely    cosmological    angstr    minute    astronomy    string    paradigm    particles    unexplained    molecular    strengths   

Project "NEWPHYS-MOLECULES" data sheet

The following table provides information about the project.


Organization address
address: DE BOELELAAN 1105
postcode: 1081 HV

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Netherlands [NL]
 Project website
 Total cost 2˙500˙000 €
 EC max contribution 2˙500˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-ADG
 Funding Scheme ERC-ADG
 Starting year 2015
 Duration (year-month-day) from 2015-09-01   to  2020-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    STICHTING VU NL (AMSTERDAM) coordinator 2˙500˙000.00


 Project objective

The Standard Model of physics is incomplete. Gravity is not understood at the quantum level, dark matter and dark energy are not explained, and (string)-theories searching to cover these shortcomings are only consistent in higher-dimensional spaces, while only four of those dimensions are observed. The mystery of finely tuned strengths of the fundamental forces, providing us with a Universe of complexity, remains unexplained. This calls for new physics that can also be explored at the atomic scale in the low energy domain. That is the paradigm underlying the present proposal: Effects of new physics – either related to hitherto unknown particles or to symmetry-breaking phenomena – will manifest themselves as minute shifts in the quantum level structures of atoms and molecules, in minute drifts over time or dependencies on environmental conditions.

I propose to perform precision metrology measurements on the H2 molecule in a search for new physics. Deviations between experimental results and QED-theory will scan unexplored territory beyond the Standard Model. Molecular metrology results of the fundamental ground tone vibration in H2 will be confronted with QED-theory calculations to search for the existence of new forces at the Angström length scale. If extra dimensions beyond the known 31 would be compactified at the same length scale of 1 Å, this would lead to strongly enhanced gravitational effects, measurable in a molecule. Our current research on experimental probes for varying constants on a cosmological time scale, is redirected into the investigation of chameleon scenarios: by studying H2 molecules in white dwarf stars by uv-astronomy, and by studying methanol molecules in our own galaxy by radio astronomy, searching for a possible dependence of fundamental constants on strong gravity or on density.

If any of these targeted phenomena could be uncovered, it would have great impact on science as a whole, and on our view on the Universe and its origin.


year authors and title journal last update
List of publications.
2017 M. J. Deuzeman, A. S. Stodolna, E. E. B. Leerssen, A. Antoncecchi, N. Spook, T. Kleijntjens, J. Versluis, S. Witte, K. S. E. Eikema, W. Ubachs, R. Hoekstra, O. O. Versolato
Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target
published pages: 103301, ISSN: 0021-8979, DOI: 10.1063/1.4977854
Journal of Applied Physics 121/10 2019-07-05
2016 Cunfeng Cheng, Aernout P. P. van der Poel, Paul Jansen, Marina Quintero-Pérez, Thomas E. Wall, Wim Ubachs, Hendrick L. Bethlem
Molecular Fountain
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.117.253201
Physical Review Letters 117/25 2019-07-05
2016 Xavier Bacalla, Edcel J. Salumbides, Harold Linnartz, Wim Ubachs, Dongfeng Zhao
Spectroscopic Survey of Electronic Transitions of C 6 H, 13 C 6 H, and C 6 D
published pages: 6402-6417, ISSN: 1089-5639, DOI: 10.1021/acs.jpca.6b06647
The Journal of Physical Chemistry A 120/32 2019-07-05
2015 M. L. Niu, E. J. Salumbides, W. Ubachs
Communication: Test of quantum chemistry in vibrationally hot hydrogen molecules
published pages: 81102, ISSN: 0021-9606, DOI: 10.1063/1.4929568
The Journal of Chemical Physics 143/8 2019-07-05
2015 M. L. Niu, E. J. Salumbides, A. N. Heays, N. de Oliveira, R. W. Field, W. Ubachs
Spectroscopy and perturbation analysis of the CO A 1 Π −X 1 Σ + (2,0), (3,0) and (4,0) bands
published pages: 627-636, ISSN: 0026-8976, DOI: 10.1080/00268976.2015.1108472
Molecular Physics 114/5 2019-07-05
2017 Matthew Bainbridge, Martin Barstow, Nicole Reindl, W.-Ü Tchang-Brillet, Thomas Ayres, John Webb, John Barrow, Jiting Hu, Jay Holberg, Simon Preval, Wim Ubachs, Vladimir Dzuba, Victor Flambaum, Vincent Dumont, Julian Berengut
Probing the Gravitational Dependence of the Fine-Structure Constant from Observations of White Dwarf Stars
published pages: 32, ISSN: 2218-1997, DOI: 10.3390/universe3020032
Universe 3/2 2019-07-05
2016 M. Daprà, M. van der Laan, M. T. Murphy, W. Ubachs
Constraint on a varying proton-to-electron mass ratio from H 2 and HD absorption at z abs ≃ 2.34
published pages: 4057-4073, ISSN: 0035-8711, DOI: 10.1093/mnras/stw3003
Monthly Notices of the Royal Astronomical Society 465/4 2019-07-05
2016 W. Ubachs, J.C.J. Koelemeij, K.S.E. Eikema, E.J. Salumbides
Physics beyond the Standard Model from hydrogen spectroscopy
published pages: 1-12, ISSN: 0022-2852, DOI: 10.1016/j.jms.2015.12.003
Journal of Molecular Spectroscopy 320 2019-07-05
2018 Wim Ubachs
Search for Varying Constants of Nature from Astronomical Observation of Molecules
published pages: , ISSN: 0038-6308, DOI: 10.1007/s11214-017-0432-y
Space Science Reviews 214/1 2019-07-05
2016 M. L. Niu, R. Hakalla, T. Madhu Trivikram, A. N. Heays, N. de Oliveira, E. J. Salumbides, W. Ubachs
Spectroscopy and perturbation analysis of the A 1 π (v=0) state of 13 C 16 O
published pages: 2857-2867, ISSN: 0026-8976, DOI: 10.1080/00268976.2016.1218078
Molecular Physics 114/19 2019-07-05
2015 E J Salumbides, A N Schellekens, B Gato-Rivera, W Ubachs
Constraints on extra dimensions from precision molecular spectroscopy
published pages: 33015, ISSN: 1367-2630, DOI: 10.1088/1367-2630/17/3/033015
New Journal of Physics 17/3 2019-07-05
2017 M Schlösser, X Zhao, M Trivikram, W Ubachs, E J Salumbides
CARS spectroscopy of the $(v=0 rightarrow 1)$ band in ${{{rm{T}}}_{2}}_{}$
published pages: 214004, ISSN: 0953-4075, DOI: 10.1088/1361-6455/aa8d80
Journal of Physics B: Atomic, Molecular and Optical Physics 50/21 2019-07-05
2017 Steffen Spieler, Martin Kuhn, Johannes Postler, Malcolm Simpson, Roland Wester, Paul Scheier, Wim Ubachs, Xavier Bacalla, Jordy Bouwman, Harold Linnartz
${{{rm{C}}}_{60}}^{+}$ and the Diffuse Interstellar Bands: An Independent Laboratory Check
published pages: 168, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aa82bc
The Astrophysical Journal 846/2 2019-07-05
2016 T. Madhu Trivikram, M. L. Niu, P. Wcisło, W. Ubachs, E. J. Salumbides
Precision measurements and test of molecular theory in highly excited vibrational states of H2 (v = 11)
published pages: , ISSN: 0946-2171, DOI: 10.1007/s00340-016-6570-1
Applied Physics B 122/12 2019-07-05
2018 F Torretti, R Schupp, D Kurilovich, A Bayerle, J Scheers, W Ubachs, R Hoekstra, O O Versolato
Short-wavelength out-of-band EUV emission from Sn laser-produced plasma
published pages: 45005, ISSN: 0953-4075, DOI: 10.1088/1361-6455/aaa593
Journal of Physics B: Atomic, Molecular and Optical Physics 51/4 2019-07-05
2016 W. Ubachs
A testing time for antimatter
published pages: 546-547, ISSN: 0036-8075, DOI: 10.1126/science.aah6215
Science 354/6312 2019-07-05
2018 T. Madhu Trivikram, M. Schlösser, W. Ubachs, E. J. Salumbides
Relativistic and QED Effects in the Fundamental Vibration of T 2
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.120.163002
Physical Review Letters 120/16 2019-07-05
2015 M. Daprà, J. Bagdonaite, M. T. Murphy, W. Ubachs
Constraint on a varying proton-to-electron mass ratio from molecular hydrogen absorption towards quasar SDSS J123714.60+064759.5
published pages: 489-506, ISSN: 0035-8711, DOI: 10.1093/mnras/stv1998
Monthly Notices of the Royal Astronomical Society 454/1 2019-07-05
2016 W. Ubachs, J. Bagdonaite, E. J. Salumbides, M. T. Murphy, L. Kaper
Colloquium : Search for a drifting proton-electron mass ratio from H 2
published pages: , ISSN: 0034-6861, DOI: 10.1103/RevModPhys.88.021003
Reviews of Modern Physics 88/2 2019-07-05
2018 F. M. J. Cozijn, P. Dupré, E. J. Salumbides, K. S. E. Eikema, W. Ubachs
Sub-Doppler Frequency Metrology in HD for Tests of Fundamental Physics
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.120.153002
Physical Review Letters 120/15 2019-07-05
2018 C.-F. Cheng, J. Hussels, M. Niu, H. L. Bethlem, K. S. E. Eikema, E. J. Salumbides, W. Ubachs, M. Beyer, N. Hölsch, J. A. Agner, F. Merkt, L.-G. Tao, S.-M. Hu, Ch. Jungen
Dissociation Energy of the Hydrogen Molecule at 10 − 9 Accuracy
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.121.013001
Physical Review Letters 121/1 2019-07-05
2017 M. Daprà, P. Noterdaeme, M. Vonk, M. T. Murphy, W. Ubachs
Analysis of carbon monoxide absorption at zabs ≃ 2.5 to constrain variation of the proton-to-electron mass ratio
published pages: 3848-3855, ISSN: 0035-8711, DOI: 10.1093/mnras/stx331
Monthly Notices of the Royal Astronomical Society 467/4 2019-07-05
2017 J. Biesheuvel, J.-Ph. Karr, L. Hilico, K. S. E. Eikema, W. Ubachs, J. C. J. Koelemeij
High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level
published pages: , ISSN: 0946-2171, DOI: 10.1007/s00340-016-6576-8
Applied Physics B 123/1 2019-07-05
2017 P. Noterdaeme, J.-K. Krogager, S. Balashev, J. Ge, N. Gupta, T. Krühler, C. Ledoux, M. T. Murphy, I. Pâris, P. Petitjean, H. Rahmani, R. Srianand, W. Ubachs
Discovery of a Perseus-like cloud in the early Universe
published pages: A82, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201629173
Astronomy & Astrophysics 597 2019-07-05
2017 F. Torretti, A. Windberger, A. Ryabtsev, S. Dobrodey, H. Bekker, W. Ubachs, R. Hoekstra, E. V. Kahl, J. C. Berengut, J. R. Crespo López-Urrutia, O. O. Versolato
Optical spectroscopy of complex open- 4 d -shell ions Sn 7 + –
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.95.042503
Physical Review A 95/4 2019-07-05
2015 J. Bagdonaite, W. Ubachs, M. T. Murphy, J. B. Whitmore
Constraint on a Varying Proton-Electron Mass Ratio 1.5 Billion Years after the Big Bang
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.114.071301
Physical Review Letters 114/7 2019-07-05
2018 Y. Wang, K. Liang, W. van de Water, W. Marques, W. Ubachs
Rayleigh–Brillouin light scattering spectroscopy of nitrous oxide (N 2 O)
published pages: 63-69, ISSN: 0022-4073, DOI: 10.1016/j.jqsrt.2017.10.029
Journal of Quantitative Spectroscopy and Radiative Transfer 206 2019-07-05
2016 R. Hakalla, M. L. Niu, R. W. Field, E. J. Salumbides, A. N. Heays, G. Stark, J. R. Lyons, M. Eidelsberg, J. L. Lemaire, S. R. Federman, M. Zachwieja, W. Szajna, P. Kolek, I. Piotrowska, M. Ostrowska-Kopeć, R. Kępa, N. de Oliveira, W. Ubachs
VIS and VUV spectroscopy of 12 C 17 O and deperturbation analysis of the A 1 Π, υ = 1–5 levels
published pages: 31588-31606, ISSN: 2046-2069, DOI: 10.1039/C6RA01358A
RSC Adv. 6/38 2019-07-05
2017 R. Hakalla, M.L. Niu, R.W. Field, A.N. Heays, E.J. Salumbides, G. Stark, J.R. Lyons, M. Eidelsberg, J.L. Lemaire, S.R. Federman, N. de Oliveira, W. Ubachs
Fourier-transform spectroscopy of 13C17O and deperturbation analysis of the A1Π (υ=0–3) levels
published pages: 312-328, ISSN: 0022-4073, DOI: 10.1016/j.jqsrt.2016.12.012
Journal of Quantitative Spectroscopy and Radiative Transfer 189 2019-07-05
2017 M. Daprà, C. Henkel, S. A. Levshakov, K. M. Menten, S. Muller, H. L. Bethlem, S. Leurini, A. V. Lapinov, W. Ubachs
Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498
published pages: 4434-4443, ISSN: 0035-8711, DOI: 10.1093/mnras/stx2308
Monthly Notices of the Royal Astronomical Society 472/4 2019-07-05
2017 Yuanqing Wang, Yin Yu, Kun Liang, Wilson Marques, Willem van de Water, Wim Ubachs
Rayleigh-Brillouin scattering in SF6 in the kinetic regime
published pages: 137-142, ISSN: 0009-2614, DOI: 10.1016/j.cplett.2016.12.033
Chemical Physics Letters 669 2019-07-05
2016 M. Glass-Maujean, Ch. Jungen, G.D. Dickenson, N. de Oliveira, W. Ubachs
The excited J = 0 1 Σ u
published pages: 33-38, ISSN: 0022-2852, DOI: 10.1016/j.jms.2016.01.002
Journal of Molecular Spectroscopy 320 2019-07-05
2016 J. Biesheuvel, J.-Ph. Karr, L. Hilico, K. S. E. Eikema, W. Ubachs, J. C. J. Koelemeij
Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD+
published pages: 10385, ISSN: 2041-1723, DOI: 10.1038/ncomms10385
Nature Communications 7 2019-07-05
2016 A. Windberger, F. Torretti, A. Borschevsky, A. Ryabtsev, S. Dobrodey, H. Bekker, E. Eliav, U. Kaldor, W. Ubachs, R. Hoekstra, J. R. Crespo López-Urrutia, O. O. Versolato
Analysis of the fine structure of Sn 11 + – Sn 14 +
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.94.012506
Physical Review A 94/1 2019-07-05
2016 M. Daprà, M. L. Niu, E. J. Salumbides, M. T. Murphy, W. Ubachs
published pages: 192, ISSN: 1538-4357, DOI: 10.3847/0004-637X/826/2/192
The Astrophysical Journal 826/2 2019-07-05
2018 Dmitry Kurilovich, Mikhail M. Basko, Dmitrii A. Kim, Francesco Torretti, Ruben Schupp, Jim C. Visschers, Joris Scheers, Ronnie Hoekstra, Wim Ubachs, Oscar O. Versolato
Power-law scaling of plasma pressure on laser-ablated tin microdroplets
published pages: 12709, ISSN: 1070-664X, DOI: 10.1063/1.5010899
Physics of Plasmas 25/1 2019-07-05

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