Observation of false vacuum decay via bubble formation in ferromagnetic superfluids

Autor:	Zenesini, Alessandro, Berti, Anna, Cominotti, Riccardo, Rogora, Chiara, Moss, Ian G., Billam, Thomas P., Carusotto, Iacopo, Lamporesi, Giacomo, Recati, Alessio, Ferrari, Gabriele
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology Condensed Matter - Quantum Gases Condensed Matter - Statistical Mechanics High Energy Physics - Theory Quantum Physics
Zdroj:	Nat. Phys. 20, 558 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1038/s41567-023-02345-4
Popis:	In quantum field theory, the decay of an extended metastable state into the real ground state is known as ``false vacuum decay'' and it takes place via the nucleation of spatially localized bubbles. Despite the large theoretical effort to estimate the nucleation rate, experimental observations were still missing. Here, we observe bubble nucleation in isolated and highly controllable superfluid atomic systems, and we find good agreement between our results, numerical simulations and instanton theory opening the way to the emulation of out-of-equilibrium quantum field phenomena in atomic systems. Comment: 12 pages, 9 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2305.05225 Zobrazit plný text záznamu View this record from Arxiv