Observation of Temperature Effects in False Vacuum Decay
Observation of Temperature Effects in False Vacuum Decay
Metastability is a phenomenon encountered in many different physical systems, ranging from chemical reactions to magnetic structures. The characteristic decay timescale from a metastable to a stable state is not always straightforward to estimate since it depends on the microscopic details of the system. A paradigmatic example in quantum field theories is the decay of the false vacuum, manifested via the nucleation of bubbles. In this paper, we measure the temperature dependence of the timescale for the false vacuum decay mechanism in an ultracold atomic quantum spin mixture which exhibits ferromagnetic properties. Our results show that the false vacuum decay rate scales with temperature as predicted by the finite-temperature extension of the instanton theory, and confirm atomic systems as an ideal platform where to study out-of-equilibrium field theories.
Riccardo Cominotti、Cosetta Baroni、Chiara Rogora、Diego Andreoni、Giacomo Guarda、Giacomo Lamporesi、Gabriele Ferrari、Alessandro Zenesini
Pitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, ItalyPitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Universita' di Trento, Trento, Italy, and Trento Institute for Fundamental Physics and Applications, INFN, Trento, Italy
物理学
Riccardo Cominotti,Cosetta Baroni,Chiara Rogora,Diego Andreoni,Giacomo Guarda,Giacomo Lamporesi,Gabriele Ferrari,Alessandro Zenesini.Observation of Temperature Effects in False Vacuum Decay[EB/OL].(2025-04-04)[2025-04-27].https://arxiv.org/abs/2504.03528.点此复制
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