Information compression at the turbulent-phase transition in cold atom gases

• URL: http://arxiv.org/abs/2211.01485v1
• Date: Wed, 2 Nov 2022 21:12:43 GMT
• Title: Information compression at the turbulent-phase transition in cold atom gases
• Authors: R. Giampaoli, J. L. Figueiredo, J. D. Rodrigues, J. A. Rodrigues, H. Ter\c{c}as, J. T. Mendon\c{c}a
• Abstract summary: We study the transition of a cold atomic cloud, driven close to a sharp electronic resonance, from a stable to a turbulent phase. From the atomic density distribution, we have computed the Shannon entropy on two different basis sets. Information compression, corresponding to a minimum in the Shannon entropy, has been observed at criticality.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The statistical properties of physical systems in thermal equilibrium are blatantly different from their far-from-equilibrium counterparts. In the latter, fluctuations often dominate the dynamics and might cluster in ordered patterns in the form of dissipative coherent structures. Here, we study the transition of a cold atomic cloud, driven close to a sharp electronic resonance, from a stable to a turbulent phase. From the atomic density distribution -- measured using a spatially-resolved pump-probe technique -- we have computed the Shannon entropy on two different basis sets. Information compression, corresponding to a minimum in the Shannon entropy, has been observed at criticality, where the system fluctuations organize into high-order (low-entropy) patterns. Being independent of the representation used, this feature is a property shared by a vast class of physical systems undergoing phase transitions.

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