172 citations · 1k across the 36 of their papers we have counts for
37 papers
Experimental test of symmetron-field based dark energy model using neutron interferometry
Andreas Dvorak, Kazuma Obigane, Hartmut Lemmel +2
We report phase shift measurements of neutron matter waves propagating in vacuum and low-pressure Argon gas, using a technique developed for neutron interferometric scattering leng…
Further search for magnetic-field-induced neutron disappearance in an ultracold neutron beam
Gaby Brenot, Benoit Clément, Hanno Filter-Pieler +7
We report the results of the second iteration of an experiment searching for neutron-hidden-neutron oscillations in a beam of ultracold neutrons, conducted at the PF2 facility of t…
Generalized Boundary Conditions for the qBounce Experiment
Eric J. Sung, Benjamin Koch, Tobias Jenke +2
Discrepancies between theory and recent qBounce data have prompted renewed scrutiny of how boundary conditions are implemented for ultracold neutrons bouncing above a mirror in Ear…
Gravitational waves in scalar-tensor theory to one-and-a-half post-Newtonian order
David Trestini
We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standar…
Multilayer volume holographic gratings from Bayfol HX: light and neutron optical characteristics
Saba Shams Lahijani, Tobias Jenke, Christian Pruner +2
During the last decade a number of volume holographic media have been investigated that could serve not only as diffractive optical elements (DOEs) for light but also for slow neut…
A search for neutron-to-hidden-neutron oscillations in a ultra-cold neutron beam
G. Ban, J. Chen, P. -J. Chiu +11
Models that postulate the existence of hidden sectors address contemporary questions, such as the source of baryogenesis and the nature of dark matter. Among the possible mixing pr…
qBounce: Systematic shifts of transition frequencies of gravitational states of ultra-cold neutrons using Ramsey gravity resonance spectroscopy
Jakob Micko, J. Bosina, S. S. Cranganore +5
qBounce is using quantum states of ultra-cold neutrons in the gravitational field of the Earth to investigate gravitation in the micrometre range. We present current measurements t…
qBounce: First Measurement of the Neutron Electric Charge with a Ramsey-type GRS Experiment
Joachim Bosina, Hanno Filter, Jakob Micko +5
The qBounce collaboration built over the last years a new Ramsey-type Gravitational Resonance Spectroscopy (GRS) experiment. After commissioning between 2016 and 2018, the setup wa…
Particle Physics at the European Spallation Source
H. Abele, A. Alekou, A. Algora +176
Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world's brightest neutron source. As such, it has the potential for a particle physic…
Oscillations: Sensitivity of a first UCN beam experiment
G. Ban, J. Chen, P. -J. Chiu +11
Oscillations of the neutron into a hidden sector particle are processes predicted in various Standard Model extensions. This extra channel for neutron disappearance has not been te…
UGR tests with atomic clocks and atom interferometers
Fabio Di Pumpo
Atomic interference experiments test the universality of the coupling between matter-energy and gravity at different spacetime points, thus being in principle able to probe possibl…
Spatial resolution determination of a position sensitive ultra-cold neutron detector
B. Clément, L. Gesson, T. Jenke +4
The study of the properties of the quantum states of bouncing neutrons requires position sensitive detection with micro-metric spatial resolution. The UCNBoX detector relies on Cha…
Gravitational waves in scalar-tensor theory to one-and-a-half post-Newtonian order
Laura Bernard, Luc Blanchet, David Trestini
We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standar…
A Novel Nuclear Emulsion Detector for Measurement of Quantum States of Ultracold Neutrons in the Earth's Gravitational Field
Naoto Muto, Hartmut Abele, Tomoko Ariga +19
Hypothetical short-range interactions could be detected by measuring the wavefunctions of ultracold neutrons (UCNs) on a mirror bounded by the Earth's gravitational field. The Sear…
Spectra of Neutron Wave Functions in Earth's Gravitational Field
Martin Suda, Manfried Faber, Joachim Bosina +5
The time evolution of a quantum wave packet in the linear gravity potential is known as Quantum Bouncing Ball. The qBounce collaboration recently observed such a system by dropping…
Gravity Resonance Spectroscopy and Dark Energy Symmetron Fields
Tobias Jenke, Joachim Bosina, Jakob Micko +3
Spectroscopic methods allow to measure energy differences with unrivaled precision. In the case of gravity resonance spectroscopy, energy differences of different gravitational sta…
Light and Slow-Neutron Diffraction by Nanodiamond-Dispersed Nanocomposite Holographic Gratings
Y. Tomita, A. Kageyama, Y. Iso +9
We demonstrate the use of nanodiamond in constructing holographic nanoparticle-polymer composite transmission gratings with large saturated refractive index modulation amplitudes a…
Happy Birthday, Ultra-Cold Neutron!
Hartmut Abele, Tobias Jenke, Hartmut Lemmel
What is driving the accelerated expansion of the universe and do we have an alternative for Einstein's cosmological constant? What is dark matter made of? Do extra dimensions of sp…
Proof of Principle for Ramsey-type Gravity Resonance Spectroscopy with qBounce
René I. P. Sedmik, Joachim Bosina, Lukas Achatz +10
Ultracold neutrons (UCNs) are formidable probes in precision tests of gravity. With their negligible electric charge, dielectric moment, and polarizability they naturally evade som…
Acoustic Rabi oscillations between gravitational quantum states and impact on symmetron dark energy
Gunther Cronenberg, Philippe Brax, Hanno Filter +6
The standard model of cosmology provides a robust description of the evolution of the universe. Nevertheless, the small magnitude of the vacuum energy is troubling from a theoretic…
Multifold paths of neutrons in the three-beam interferometer detected by tiny energy-kick
Hermann Geppert-Kleinrath, Tobias Denkmayr, Stephan Sponar +3
A neutron optical experiment is presented to investigate the paths taken by neutrons in a three-beam interferometer. In various beam-paths of the interferometer, the energy of the…
Neutron lifetime measurements with the big gravitational trap for ultracold neutrons
A. P. Serebrov, E . A. Kolomensky, A. K. Fomin +14
Neutron lifetime is one of the most important physical constants which determines parameters of the weak interaction and predictions of primordial nucleosynthesis theory. There rem…
Comparison of ultracold neutron sources for fundamental physics measurements
G. Bison, M. Daum, K. Kirch +20
Ultracold neutrons (UCNs) are key for precision studies of fundamental parameters of the neutron and in searches for new CP violating processes or exotic interactions beyond the St…
Confined Contextuality in Neutron Interferometry: Observing the Quantum Pigeonhole Effect
Mordecai Waegell, Tobias Denkmayr, Hermann Geppert +6
Previous experimental tests of quantum contextuality based on the Bell-Kochen-Specker (BKS) theorem have demonstrated that not all observables among a given set can be assigned non…