Weighing the vacuum with the Archimedes experiment
Year: 2025
Authors: Allocca A., Avino S., Cabras A., Calloni E., Caprara S., Cardoso AFS., Carpinelli M., Contu A., D’Onofrio L., D’Urso D., Davari N., De Rosa R., Errico L., Esposito M., Gagliardi G., Grilli M., Mangano V., Marsella M., Naticchioni L., Pasqualetti A., Pepe GP., Perciballi M., Puppo P., Rapagnani P., Ricci F., Rosa L., Rovelli C., Rozza D., Ruggi P., Saini N., Sequino V., Sipala V., Stornaiuolo D., Tafuri F., Trozzo L., Tuveri M.
Autors Affiliation: Univ Napoli Federico II, Dipartimento Fis, Via Cinthia, I-80126 Naples, Italy; Ist Nazl Fis Nucl Sez Napoli, Via Cinthia, I-80126 Naples, Italy; Ist Nazl Fis Nucl Sez Napoli, Via Cinthia, I-80126 Naples, Italy; Consiglio Nazl Ric Ist Nazl Ottica, Via Campi Flegrei 34, I-80078 Naples, Italy; Ist Nazl Fis Nucleare Sez Cagliari, I-09042 Monserrato, Cagliari, Italy; Univ Sassari, Dipartimento Sci Chim Fis Matematiche & Nat, Via Vienna 2, I-07100 Sassari, Italy; Ist Nazl Fis Nucl Sez Roma, Piazzale Aldo Moro 2, I-00185 Rome, Italy; Sapienza Univ Roma, Dipartimento Fis, Piazzale Aldo Moro 5, I-00185 Rome, Italy; Univ Studi Milano Bicocca, Dipartimento Fis, Piazza Sci 3, I-20126 Milan, Italy; Ist Nazl Fis Nucleare, Sez Milano Bicocca, Piazza Sci 3, I-20126 Milan, Italy; Consiglio Nazl Ric Comprensorio A Olivetti Ist Naz, Via Campi Flegrei 34, I-80078 Naples, Italy; European Gravitat Observ EGO, Via Edoardo Amaldi, I-56021 Cascina, PI, Italy; Univ Napoli Federico II, Dipartimento Matemat, Via Cintia, I-80126 Naples, Italy; Ctr Phys Theor, Campus Luminy,Case 907, F-13288 Marseille, France; Aix Marseille Univ, CNRS, CPT UMR 7332, F-13288 Marseille, France; Univ Toulon & Var, CNRS, CPT, UMR 7332, Ave LUniv, F-83130 La Garde, France; Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, Italy.
Abstract: Exploring the complex connection between vacuum fluctuations and gravitational field is the goal of Archimedes experiment. Tiny changes in the weight of the vacuum contained in high-temperature superconductors can be measured using a high-precision balance. These structures can absorb or expel vacuum energy depending on their normal or superconductive status. In the measurement, the state of the sample is modulated into two states, normal and superconducting, with a reversible transition achieved by periodically varying the temperature of the thermal bath. The paper provides the current status of the experiment, highlighting the study and construction of the balance with its thermal modulation and cryogenic systems, and the investigation of high-temperature superconductor candidates.
Journal/Review: INTERNATIONAL JOURNAL OF MODERN PHYSICS A
Volume: 40 (8) Pages from: 2443028-1 to: 2443028-17
More Information: We acknowledge the Regione Sardegna for its support to the SAR-GRAV Laboratory. L. Rosa acknowledges PRIN E2J4RK PANTHEON – Next Generation EU for partial support.KeyWords: Quantum fluctuations; vacuum weight; gravityDOI: 10.1142/S0217751X24430280
