How experiments use large magnetic fields (bigger than 30 Tesla) to search for new particles and fundamental physics in table-top experiments? Various experimental concepts and techniques are discussed, together with current and proposed experiments. https://arxiv.org/abs/1803.07547 Caption: The proposed scaled down, fully functional initial-demonstration version of International Axion Observatory (IAXO). Source: http://iaxo.web.cern.ch/content/home-international-axion-observatory
Superconductor vortices imaged by NV ensembles in diamonds
We present a novel wide-field imaging technique to image vortices in type-II superconductors. We acquire the images using ensembles of NV centers in diamond. By using microfabricated diamond plates we reduce the superconductor-NV distance to less than one µm, which allowed us to study the stray magnetic field of vortices in a Type-II superconductor. https://arxiv.org/abs/1803.01957 Caption: Vortices in a type-II superconductor, […]
Quanta magazine notes our research
https://www.quantamagazine.org/ultra-accurate-clocks-lead-search-for-new-laws-of-physics-20180416/
Low-energy tests of fundamental physics, a review
Why is it interesting and important to test fundamental laws and search for undiscovered particles using laboratory-based techniques? Such room-scale experiments are already spearheading discovery, and can be expected to become even more important as accelerators reach seemingly inevitable limits. A personal perspective of Dmitry Budker. https://doi.org/10.1017/S1062798717000795 Caption: Group meeting, where personal perspectives are often […]
Shooting a laser into the sky and picking up the light of excited sodium atoms
We demonstrate a method of remote magnetic field measurements in the mesosphere using a laser beam with intensity modulation at the Larmor frequency of sodium, achieving an accuracy of 0.28 mG/√ Hz. This is useful as a laser guide star bright enhancement method and as a remote sensing device for magnetic fields in the mesosphere. https://arxiv.org/abs/1802.04686 Nature […]
GNOME adds BGU to its collaboration
GNOME collaboration expands! See report in Jerusalem Post.
Isotope shift, non-linearity of King plot and search for nuclear island of stability and new particles
In a joint work of Anna Viatkina, Victor Flambaum and Amy Geddes, a single-particle relativistic formula found to estimate the isotope shift (IS) in many-electron atoms. It is used to predict the behavior of IS in superheavy atoms. They further analyse different contributions to the non-linearity of King plot arising from Standard Model. Their estimates […]
A hypothetical effect of the Maxwell-Proca electromagnetic stresses on galaxy rotation curves
One of the results of the visit of Prof. Dmitri D. Ryutov to Mainz in the summer of 2017 is a paper (co-authored by Profs. D. Budker and V. V. Flambaum) on a possible influence of a finite mass of the photon on galactic rotation curves. The leading current explanation of the anomalous stellar velocities […]
Hybrid optical pumping of K and Rb atoms in a paraffin coated vapor cell
We perform optical pumping of 87Rb atoms in a way that shows no power-broadening or light-shift effects. https://arxiv.org/abs/1708.08605
Cosmic Axion Spin Precession Experiment Explained
We have published a detailed description of an experiment we are conducting which will search for axion in yet-to-be explored parameter space. Best case scenario – we will find an axion. Otherwise we will set useful limits on axion’s mass and coupling strength. https://arxiv.org/abs/1707.05312