Quantum fluctuations in a quartet superfluid of two-dimensional Fermi mixture

[2605.23267] Quantum fluctuations in a quartet superfluid of two-dimensional Fermi mixture Skip to main content Search Submit Donate Log in Condensed Matter > Quantum Gases arXiv:2605.23267 (cond-mat) [Submitted on 22 May 2026 ( v1 ), last revised 25 Aug 2026 (this version, v2)] Title: Quantum fluctuations in a quartet superfluid of two-dimensional Fermi mixture Authors: Wei Wang , Yupeng Wang , Xiaoling Cui View PDF HTML (experimental) Abstract: We study quantum fluctuations in a quartet superfluid (QSF) of two-dimensional (2D) fermion mixtures with mass imbalance. Here QSF is a high-order superfluid that corresponds to the condensation of ($1+3$) clusters, each consisting of a light fermion and three heavy ones. By incorporating the Gaussian fluctuations respecting dominant four-body correlations in this system, our theory successfully recovers the leading universal logarithmic contribution to the 2D equation of state in the deep binding regime, thereby offering a correct physical picture of quartet clusters behaving as composite bosons. By extending the Gaussian fluctuation theory from pairing to quartet superfluids, our results shed light on quantum fluctuations in general fermion superfluids with arbitrarily high-order correlations. Comments: 15 pages, 3 figures Subjects: Quantum Gases (cond-mat.quant-gas) ; Superconductivity (cond-mat.supr-con) Cite as: arXiv:2605.23267 [cond-mat.quant-gas] (or arXiv:2605.23267v2 [cond-mat.quant-gas] for this version) https://doi.org/10.48550/arXiv.2605.23267 Focus to learn more arXiv-issued DOI via DataCite Journal reference: Phys. Rev. B 114, 094516 (2026) Related DOI : https://doi.org/10.1103/486s-1d49 Focus to learn more DOI(s) linking to related resources Submission history From: Wei Wang [ view email ] [v1] Fri, 22 May 2026 06:14:27 UTC (248 KB) [v2] Tue, 25 Aug 2026 08:18:13 UTC (244 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.quant-gas < prev | next > new | recent | 2026-05 Change to browse by: cond-mat cond-mat.supr-con References & Citations SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab)

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