Momentum Diffusion, Decoherence and Drag Force on a Magnetic Nanoparticle
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Quantum Physics arXiv:2602.21518 (quant-ph) [Submitted on 25 Feb 2026] Title:Momentum Diffusion, Decoherence and Drag Force on a Magnetic Nanoparticle Authors:Agya Sewara Alam, Anupam Mazumdar View a PDF of the paper titled Momentum Diffusion, Decoherence and Drag Force on a Magnetic Nanoparticle, by Agya Sewara Alam and 1 other authors View PDF HTML (experimental) Abstract:In this paper, we will provide a complete derivation of the decoherence rate for a magnetic nanoparticle in quantum superposition in the presence of the fluctuating electromagnetic field in a thermal background by using the fluctuation-dissipation theorem in the long-wavelength limit. The long-wavelength limit assumes that the superposition size is much smaller than the wavelength of the electromagentic filed fluctuations. We will extend this computation to two diamagnetic nanoparticles kept in quantum superposition adjacent to each other. We will also show how the drag force on a single nanoparticle arises from external electromagnetic-field fluctuations, and compare our results with those for the nanoparticle's dielectric properties. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.21518 [quant-ph] (or arXiv:2602.21518v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.21518 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Agya Sewara Alam [view email] [v1] Wed, 25 Feb 2026 03:14:57 UTC (60 KB) Full-text links: Access Paper: View a PDF of the paper titled Momentum Diffusion, Decoherence and Drag Force on a Magnetic Nanoparticle, by Agya Sewara Alam and 1 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-02 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: 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?) Links to Code Toggle Papers with Code (What is Papers with Code?) 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?) 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?)