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
10:30 — Pauline Yzombard, 1S-3S CW spectroscopy of Deuterium atoms
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
12:00 — Ioana Doran, The fine and hyperfine structure of molecular hydrogen ions from spectroscopy of Rydberg states
12:30 — Piotr Wcisło, Accurate spectroscopy of cold hydrogen molecules
13:00 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Shui-Ming Hu, SI-traceable measurements of molecules based on cavity-enhanced spectroscopy
15:00 — Randolf Pohl, The 3He charge radius and the 3He-4He isotope shift from laser spectroscopy of muonic He ions
15:30 — Elmer Gründeman, Laser spectroscopy of the ground-state hyperfine splitting in muonic hydrogen
15:45 — Emiliano Mocchiutti, The FAMU Experiment: Measuring the Hyperfine Splitting of Muonic Hydrogen in the Ground State
16:00 — Coffee break (served on-site, incl. in the Registration Fee)
16:30 — Poster Session 1
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
09:30 — Soroosh Alighanbari, Exploring Fundamental Constants with High-Precision Spectroscopy of Molecular Hydrogen Ions
10:00 — Sven Sturm, Precision Spectroscopy of Molecular Hydrogen Ions in the Alphatrap Penning trap
10:30 — Xin Tong, Probing Rovibrational Spectroscopy of HD+ through Spatially Resolved Fluorescence Collection
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — J.P. Karr, Hydrogen molecular ions: status of theory
12:00 — 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
12:30 — Vojtech Patkos, QED theory of isotope shift
13:00 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Vladimir Yerokhin, Recent developments in hydrogen Lamb shift and Rydberg constant
15:00 — Bastian Sikora, Improvement of the bound-electron g-factor theory after completion of two-loop self-energy calculations
15:30 — Matthew Bohman, Fundamental Constants and Tests of QED Theory via the Bound Electron g-factor
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
16:45 — Ádám Margócsy, Non-adiabatic, relativistic, and QED corrections to the rovibrational intervals of $\text{He}_2\ (a\ ^3\Sigma_\text{u}^+)$ and $\text{He}_2^+\ (X^+\ ^2\Sigma_\text{u}^+)$
17:00 — Gregory Adkins, Efficient calculation of electron vacuum polarization contributions to energy levels of two-body muonic atoms and ions
17:15 — Franziska Hagelstein, Revisiting proton finite-size corrections in (muonic) hydrogen
17:30 — Vadim Lensky, Hadronic vacuum polarization: contributions to spectra of hydrogen-like atoms and ions revisited
17:45 — Michael Eides, QED field Hamiltonian decomposition
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
09:45 — Yu Goto, Current status of precise measurement of muonium hyperfine structure in high magnetic field at J-PARC MUSE
10:15 — Edward Thorpe-Woods, Precision spectroscopy of leptonic atoms
11:00 — Coffee break (served on-site, incl. in the Registration Fee)
11:30 — Robert Waddy, LEMING - towards muonium interferometry
12:00 — Maria Pasinetti, The Lepton SYMmetry experiment
12:30 — Chavdar Dutsov, Searching for electric dipole moments using a compact frozen-spin trap
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
15:00 — Shikha Rathi, Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-Field QED
15:30 — Omer Shtaif, Probing New Physics with Exotic Atoms
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+
16:45 — Tanvir Sayed, High-Precision Penning-Trap Mass Spectrometry of Actinides at TRIGA-Trap
17:15 — Amit Nanda, New bounds on the Standard Model Extension coefficients in the proton sector from Rabi-type hyperfine spectroscopy of deuterium
17:30 — Rebecca Daly, THz Spectroscopy of Rydberg Positronium
17:45 — Emily Burbach, Collinear Laser Spectroscopy of Helium-like 12-14C4+
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
09:45 — Dezső Horváth, Measurement of the mass of the W boson
10:30 — Andrea Bulla, Effective Field Theory fits of the electroweak sector CMS data
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
12:15 — Christian Rothleitner, The Measurements of the Newtonian Constant of Gravitation - A Short Overview
13:00 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Andrzej Czarnecki, Muon g−2: Theory Review
15:15 — Makiko Nio, On the tenth-order QED contribution to the electron anomalous magnetic moment.
15:45 — Sergey Volkov, Coulomb corrections to the two-loop vacuum polarization potential and their contribution to the Lamb shift of hydrogenlike ions
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++
17:15 — TBA
17:45 — Yanjie Zhang, Measurement of geometric distance between silicon spheres with laser interferometry in determination of G
18:00 — 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
09:30 — Alexander Wilzewski, New physics searches with highly charged ions
10:00 — Stefan Eriksson, Fundamental physics with antihydrogen in the ALPHA experiment
10:30 — Lei Cong, Spin-dependent exotic interactions
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
12:00 — Andreas Mooser, High-precision ground-state fine and hyperfine spectroscopy at μTEx
12:30 — Barbara Latacz, BASE – testing fundamental symmetries by high precision comparisons of the fundamental properties of protons and antiprotons
13:00 — Tymon Kilich — g-factor of H^-
13:15 — Lunch (served on-site, incl. in the Registration Fee)
14:30 — Eric Hunter, A slow beam of antihydrogen atoms
15:00 — Shoichiro Nishimura, Muon Precision Measurement with the Penning Trap at J-PARC
15:45 — Wenting Chen, The n2EDM experiment at the Paul Scherrer Institute
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
17:00 — TBA
17:30 — Adam Koza, Ultracold molecules - a testbed for physics beyond the Standard Model
18:00 — Closing Remarks, End of the FFK2025 Conference
Bonus:
18:30 — University of Warsaw Choir performance (free of charge, ~30 min by bus from the FFK venue — Google Maps link)
List of accepted poster contributions
David Ferenc — Gaussian basis set approach to one-loop self-energy
Krzysztof Habdas — Polarisation effects in microwave spectroscopy of Positronium
Valentin Schmidt — Ortho-Positronium lifetime measurements with a new PET-like detector
Misha Gorshteyn — Nuclear polarization in muonic atoms, charge radii and V_ud
Lei Cong — Searching for Exotic Interactions between Antimatter
Lei Cong — Constraints on exotic interactions from scalar spin-spin coupling in tritium deuteride (DT)
Ádám Nonn — Pair corrections to the no-pair Dirac–Coulomb(–Breit) energy of heliumlike systems
Saeed Nasiri — High-Precision Non-Born–Oppenheimer Calculations of BH and BH+ Molecules: Towards Benchmark Accuracy in Multi-Electron Systems
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
Ádám Margócsy — Towards the self-energy correction of the no-pair Dirac--Coulomb energy for two-electron systems
Ryan Benazzouk — QED effects in molecules : vacuum polarization in a Gaussian basis set
Jia-shian Wang — Prospects for a Precision Measurement of the Positronium 1S0-3S1 Interval using Quantum Oscillations
György Szondy — Environmental effects in precision measurement: control or rather compensate
Joanna Peszka — Enhanced antihydrogen accumulation with laser-cooled Be+
Elizaveta Dourassova — Development of new superfluid helium-based muonium sources for the LEMING experiment
Vincent Weis — Updates from the Hydrogen 1S-3S Direct Frequency Comb Spectroscopy Experiment at MPQ
Magnus Schlösser — From a molecular tritium source at the Karlsruhe Tritium Neutrino Experiment (KATRIN) and to an atomic tritium source for KATRIN++
Dawid Dąbrowski — The Excited Electronic States of the Helium Dimer Including Relativistic and Adiabatic Effects
Yanjie Zhang — Measurement of geometric distance between silicon spheres with laser interferometry in determination of G
Dylan Yost — A measurement of the 2S1/2 hyperfine interval in atomic hydrogen
Florian Egli — Toward High-Precision XUV Spectroscopy of the 1S-2S Transition in He+