Special Issue "Measuring Gravity in the Lab"

A special issue of Atoms (ISSN 2218-2004).

Deadline for manuscript submissions: closed (30 September 2017)

Special Issue Editors

Guest Editor
Dr. Ivette Fuentes

Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Wien, Austria
Website | E-Mail
Guest Editor
Dr. Philippe Bouyer

LP2N, Laboratoire de Photonique Numérique et Nanosciences, Institut d'Optique Graduate School, Rue François Mitterrand, F-33400, Talence, France
Website | E-Mail

Special Issue Information

Dear Colleagues,

The most fundamental understanding that we have of nature is given by quantum mechanics, for small length scales, and by general relativity in the large length regime. However, the inability to unify the underlying concepts of these two theories remains one of the biggest unsolved problems in physics. Fortunately, a new generation of experiments is quickly developing and promise to provide deeper insights into the interface between gravity and quantum theory. This includes the study of large quantum superposition states involving clocks or increasingly massive objects, space-based quantum experiments, and the measurement of gravitational parameters at smaller (laboratory) length scales using quantum systems, such as cold neutrons and atoms. Recently, there has been fast progress in the high-sensitivity measurements of the Newtonian constant, of the gravity field-gradient and curvature and of short-range gravitational forces. There have even been proposals to use these systems to measure gravitational waves and demonstrate quantum field theory in curved space–time. Gravitational waves have been recently detected and quantum optics has been playing a central role in the most advanced experiments. However, we are still lacking experiments that help us understand general relativity at small lengths or large energies where quantum effects become relevant.

This Special Issue of Atoms will highlight theory and experiments that aim at measuring gravitational effects in the laboratory focusing on the latest updates in topics, such as measurements of gravitational waves, quantum tests of the equivalence principle, quantum metrology for gravitational fields and space-based quantum experiments. This includes classical and quantum methods with an open interdisciplinary scope.

Dr. Ivette Fuentes
Dr. Philippe Bouyer
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atoms is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 350 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (1 paper)

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Research

Open AccessFeature PaperArticle Studying Antimatter Gravity with Muonium
Received: 13 February 2018 / Revised: 23 March 2018 / Accepted: 26 March 2018 / Published: 9 April 2018
PDF Full-text (2726 KB) | HTML Full-text | XML Full-text
Abstract
The gravitational acceleration of antimatter, g¯, has yet to be directly measured; an unexpected outcome of its measurement could change our understanding of gravity, the universe, and the possibility of a fifth force. Three avenues are apparent for such a measurement:
[...] Read more.
The gravitational acceleration of antimatter, g ¯ , has yet to be directly measured; an unexpected outcome of its measurement could change our understanding of gravity, the universe, and the possibility of a fifth force. Three avenues are apparent for such a measurement: antihydrogen, positronium, and muonium, the last requiring a precision atom interferometer and novel muonium beam under development. The interferometer and its few-picometer alignment and calibration systems appear feasible. With 100 nm grating pitch, measurements of g ¯ to 10%, 1%, or better can be envisioned. These could constitute the first gravitational measurements of leptonic matter, of 2nd-generation matter, and possibly, of antimatter. Full article
(This article belongs to the Special Issue Measuring Gravity in the Lab)
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