The FFK2025 Conference Program was published on April 8th, 2025. Each day of the conference highlights a specific area of research. Leading researchers in the field will supervise the discussion and program of the topical sessions.
Monday — May 26th, 2025
H, He^+, and light muonic atoms spectroscopy, muH hfs. Chaired by Thomas Udem.
08:00 — Registration
09:55 — Welcome Remarks
10:00 — Dylan Yost, Spectroscopy of the Hydrogen 2S-nS/D Transitions at Colorado State University open abstract
10:30 — Pauline Yzombard, 1S-3S CW spectroscopy of Deuterium atoms open abstract
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — Vitaly Wirthl, Standard Model test below 1ppt with the 2S-6P transition frequency measurement in atomic hydrogen open abstract
12:00 — Ioana Doran, The fine and hyperfine structure of molecular hydrogen ions from spectroscopy of Rydberg states open abstract
12:30 — Piotr Wcisło, Accurate spectroscopy of cold hydrogen molecules open abstract
13:00 — Conference Photo (in the lecture room)
13:05 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Shui-Ming Hu, Precision spectroscopy of atomic helium and molecular hydrogen at Hefei open abstract
15:00 — Randolf Pohl, The 3He charge radius and the 3He-4He isotope shift from laser spectroscopy of muonic He ions open abstract
15:30 — Elmer Gründeman, Laser spectroscopy of the ground-state hyperfine splitting in muonic hydrogen open abstract
15:45 — Emiliano Mocchiutti, The FAMU Experiment: Measuring the Hyperfine Splitting of Muonic Hydrogen in the Ground State open abstract
16:00 — Coffee break (served on-site, incl. in the Registration Fee)
16:30 — Poster Session
18:30 — End of day 1
Tuesday — May 27th, 2025
QED theory of hydrogenic and few-electron atoms, ions, H2 and H2+, mass spectroscopy of light nuclei. Chaired by Krzysztof Pachucki.
08:00 — Registration
09:00 — Klaus Blaum, Precision Penning-trap mass measurements of light atomic masses open abstract
09:30 — Soroosh Alighanbari, Exploring Fundamental Constants with High-Precision Spectroscopy of Molecular Hydrogen Ions open abstract
10:00 — Sven Sturm, Precision Spectroscopy of Molecular Hydrogen Ions in the Alphatrap Penning trap open abstract
10:30 — J.P. Karr, Hydrogen molecular ions: status of theory open abstract
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — Gloria Clausen, The ionization energy of metastable 3He and 4He 2^3S1 and the alpha- and helion-particle charge-radius difference from precision spectroscopy of the np Rydberg series open abstract
12:00 — Vojtech Patkos, QED theory of isotope shift open abstract
12:30 — Gregory Adkins, Efficient calculation of electron vacuum polarization contributions to energy levels of two-body muonic atoms and ions open abstract
13:00 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Vladimir Yerokhin, Recent developments in hydrogen Lamb shift and Rydberg constant open abstract
15:00 — Bastian Sikora, Improvement of the bound-electron g-factor theory after completion of two-loop self-energy calculations open abstract
15:30 — Matthew Bohman, Fundamental Constants and Tests of QED Theory via the Bound Electron g-factor open abstract
16:00 — Coffee break (served on-site, incl. in the Registration Fee)
16:30 — Jacek Komasa, Nonadiabatic relativistic and QED corrections to rovibrational energy levels of the X${}^1\Sigma^+_g$ state of hydrogen molecule istopologues open abstract
16:45 — Ádám Margócsy, Non-adiabatic, relativistic, and QED corrections to the rovibrational intervals of $\text{He}_2\ (a\ ^3\Sigma_\text{u}^+)$ and $\text{He}_2^+\ (X^+\ ^2\Sigma_\text{u}^+)$ open abstract
17:00 — Dawid Dąbrowski — The Excited Electronic States of the Helium Dimer Including Relativistic and Adiabatic Effects open abstract
17:15 — Franziska Hagelstein, Revisiting proton finite-size corrections in (muonic) hydrogen open abstract
17:30 — Vadim Lensky, Hadronic vacuum polarization: contributions to spectra of hydrogen-like atoms and ions revisited open abstract
17:45 — Michael Eides, QED field Hamiltonian decomposition open abstract
18:00 — End of day 2
Wednesday — May 28th, 2025
Positronium, muonium and other exotic systems, low energy BSM experiments with elementary particles, nuclear charge radii. Chaired by Paolo Crivelli.
08:00 — Registration
09:00 — David Cassidy, Microwave spectroscopy of positronium: progress and future prospects open abstract
09:45 — Yu Goto, Current status of precise measurement of muonium hyperfine structure in high magnetic field at J-PARC MUSE open abstract
10:15 — Edward Thorpe-Woods, New results of positronium 1S-2S transition and Muonium Fine structure open abstract
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — Robert Waddy, LEMING - towards muonium interferometry open abstract
12:00 — Maria Pasinetti, The Lepton SYMmetry experiment open abstract
12:30 — Timothy Hume, Searching for electric dipole moments using a compact frozen-spin trap open abstract
13:00 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Ben Ohayon, Precision measurement of the radii of light nuclei with high-resolution x-ray spectroscopy open abstract
15:00 — Shikha Rathi, Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-Field QED open abstract
15:30 — Omer Shtaif, Probing New Physics with Exotic Atoms open abstract
16:00 — Coffee break (served on-site, incl. in the Registration Fee)
16:30 — Florian Egli, Toward High-Precision XUV Spectroscopy of the 1S-2S Transition in He+ open abstract
16:45 — Tanvir Sayed, High-Precision Penning-Trap Mass Spectrometry of Actinides at TRIGA-Trap open abstract
17:15 — Amit Nanda, New bounds on the Standard Model Extension coefficients in the proton sector from Rabi-type hyperfine spectroscopy of deuterium open abstract
17:30 — Rebecca Daly, THz Spectroscopy of Rydberg Positronium open abstract
17:45 — Emily Burbach, Collinear Laser Spectroscopy of Helium-like 12-14C4+ open abstract
18:00 — End of day 3
Thursday — May 29th, 2025
Classical metrology, G-measurements, high energy BSM physics, e-p scattering. Chaired by Savely G. Karshenboim.
08:00 — Registration
09:00 — André Sopczak, Prospects of Higgs Boson Research at the LHC open abstract
09:45 — Dezső Horváth, Measurement of the mass of the W boson open abstract
10:30 — Andrea Bulla, Effective Field Theory fits of the electroweak sector CMS data open abstract
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — Christof Gaiser, The kelvin in the "new SI" - differences between thermodynamic- and ITS-90 temperature - a pathway to improvements in metrology and beyond open abstract
12:15 — Christian Rothleitner, The Measurements of the Newtonian Constant of Gravitation - A Short Overview open abstract
13:00 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Andrzej Czarnecki, Muon g−2: Theory Review open abstract
15:15 — Makiko Nio, On the tenth-order QED contribution to the electron anomalous magnetic moment open abstract
15:45 — Sergey Volkov, Coulomb corrections to the two-loop vacuum polarization potential and their contribution to the Lamb shift of hydrogenlike ions open abstract
16:00 — Coffee break (served on-site, incl. in the Registration Fee)
16:30 — Magnus Schlösser, Recent results from the Karlsruhe Tritium Neutrino Experiment (KATRIN) and the future atomic tritium source for KATRIN++ open abstract
17:15 — Ian Robinson — A review of the Kibble balance technique for relating mass, force and torque to the Planck constant open abstract
18:00 — Yanjie Zhang, Measurement of geometric distance between silicon spheres with laser interferometry in determination of G open abstract
18:15 — End of day 4
Friday — May 30th, 2025
EDM’s physics, antimatter, alpha and clocks, electromagnetic moments of leptons and nuclei. Chaired by Stefan Ulmer.
08:00 — Registration
09:00 — Maksim Okhapkin, Towards a 229Th nuclear optical clock open abstract
09:30 — Alexander Wilzewski, New physics searches with highly charged ions open abstract
10:00 — Stefan Eriksson, Fundamental physics with antihydrogen in the ALPHA experiment open abstract
10:30 — Lei Cong, Spin-dependent exotic interactions open abstract
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — Timothy Friesen, Measuring the ground state hyperfine splitting of antihydrogen in the ALPHA experiment open abstract
12:00 — Andreas Mooser, High-precision ground-state fine and hyperfine spectroscopy at μTEx open abstract
12:30 — Barbara Latacz, BASE – testing fundamental symmetries by high precision comparisons of the fundamental properties of protons and antiprotons open abstract
13:00 — Tymon Kilich — g-factor of H^- open abstract
13:15 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Dan Murtagh — A slow beam of antihydrogen atoms open abstract
15:00 — Shoichiro Nishimura, Muon Precision Measurement with the Penning Trap at J-PARC open abstract
15:30 — Wenting Chen, The n2EDM experiment at the Paul Scherrer Institute open abstract
16:00 — Coffee break (served on-site, incl. in the Registration Fee)
16:30 — Andrew Mansour, Variation of the Quadrupole Hyperfine Structure and Nuclear Radius due to an Interaction with Scalar and Axion Dark Matter open abstract
17:00 — Adam Koza, Ultracold molecules - a testbed for physics beyond the Standard Model open abstract
17:30 — Closing Remarks, End of the FFK2025 Conference
Bonus:
18:30 — University of Warsaw Choir performance (free of charge, NEW VENUE: ~2 min walk from the FFK venue — New Google Maps link)
List of accepted poster contributions
| P1 | David Ferenc — Gaussian basis set approach to one-loop self-energy | open abstract |
| P2 | Krzysztof Habdas — Polarisation effects in microwave spectroscopy of Positronium | open abstract |
| P3 | Valentin Schmidt — Ortho-Positronium lifetime measurements with a new PET-like detector | open abstract |
| P4 | Lei Cong — Searching for Exotic Interactions between Antimatter | open abstract |
| P5 | Lei Cong — Constraints on exotic interactions from scalar spin-spin coupling in tritium deuteride (DT) | open abstract |
| P6 | Ádám Nonn — Pair corrections to the no-pair Dirac–Coulomb(–Breit) energy of heliumlike systems | open abstract |
| P7 | Balázs Rácsai — Rovibronic computations of the b and c electronic states of the helium dimer including the non-adiabatic, relativistic, and leading-order QED couplings and corrections | open abstract |
| P8 | Ádám Margócsy — Towards the self-energy correction of the no-pair Dirac--Coulomb energy for two-electron systems | open abstract |
| P9 | Ryan Benazzouk — QED effects in molecules : vacuum polarization in a Gaussian basis set | open abstract |
| P10 | Jia-shian Wang — Prospects for a Precision Measurement of the Positronium 1S0-3S1 Interval using Quantum Oscillations | open abstract |
| P11 | György Szondy — Environmental effects in precision measurement: control or rather compensate | open abstract |
| P12 | Joanna Peszka — Enhanced antihydrogen accumulation with laser-cooled Be+ | open abstract |
| P13 | Elizaveta Dourassova — Development of new superfluid helium-based muonium sources for the LEMING experiment | open abstract |
| P14 | Vincent Weis — Updates from the Hydrogen 1S-3S Direct Frequency Comb Spectroscopy Experiment at MPQ | open abstract |
| P15 | Magnus Schlösser — From a molecular tritium source at the Karlsruhe Tritium Neutrino Experiment (KATRIN) and to an atomic tritium source for KATRIN++ | open abstract |
| P16 | Dawid Dąbrowski — The Excited Electronic States of the Helium Dimer Including Relativistic and Adiabatic Effects | open abstract |
| P17 | Yanjie Zhang — Measurement of geometric distance between silicon spheres with laser interferometry in determination of G | open abstract |
| P18 | Dylan Yost — A measurement of the 2S1/2 hyperfine interval in atomic hydrogen | open abstract |
| P19 | Florian Egli — Toward High-Precision XUV Spectroscopy of the 1S-2S Transition in He+ | open abstract |
| P20 | Robert Potvliege — Bounds on a fifth force from hydrogen, deuterium and helium spectroscopy | open abstract |
| P21 | Sergey Volkov — Calculation of the total 10th order QED contribution to the electron magnetic moment | open abstract |
| P22 | Andrew Mansour — Variation of the Quadrupole Hyperfine Structure and Nuclear Radius due to an Interaction with Scalar and Axion Dark Matter | open abstract |