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Results of Measuring the Influence of Casimir Energy on Superconducting Phase Transitions |
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| Authors: | Annalisa Allocca Giuseppe Bimonte Detlef Born Enrico Calloni Giampiero Esposito Uwe Huebner Evgeni Il’ichev Luigi Rosa Francesco Tafuri |
| Affiliation: | 1. Dipartimento di Fisica, Universit?? di Siena, via Roma 56, 53100, Siena, Italy 2. INFN, sezione di Pisa, Largo Pontecorvo 3, Polo Fibonacci Edificio C, 56127, Pisa, Italy 3. Dipartimento di Scienze Fisiche, Universit?? Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, Edificio 6, 80126, Napoli, Italy 4. Complesso Universitario di Monte S. Angelo, Via Cintia, Edificio 6, INFN, Sezione di Napoli, 80126, Napoli, Italy 5. Institute for Photonic Technology, Postfach 10 02 39, 07702, Jena, Germany 6. Dipartimento di Ingegneria dell??Informazione, Seconda Universit?? degli Studi di Napoli, via Roma 29, 81031, Aversa, Ce, Italy |
| Abstract: | The ALADIN experiment aims at observing how the critical magnetic field of a superconducting aluminum film is modified, when it constitutes one of the reflecting surfaces of a Casimir cavity. If successful, such an observation would reveal the influence of vacuum energy on the superconducting phase transition. In this paper, a rigorous analysis of experimental data is reported, the results are discussed and compared with theoretical predictions based on Lifshitz theory of dispersion forces, and the BCS formula for the optical conductivity of superconductors. Thanks to this rigorous analysis, it can now be asserted that in the region of energy where it is expected that Casimir energy is comparable with condensation energy and the deviations of critical field from BCS formula to be not negligible, an anomalous behavior is found. |
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