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Identity and difference: how topology helps to understand quantum indiscernability

Abstract : This contribution, to be published in Imagine Math 8 to celebrate Michele Emmer's 75th birthday, can be seen as the second part of my previous considerations on the relationships between topology and physics (Mouchet, 2018). Nevertheless, the present work can be read independently. The following mainly focusses on the connection between topology and quantum statistics. I will try to explain to the non specialist how Feynman's interpretation of quantum processes through interference of classical paths (path integrals formulation), makes the dichotomy between bosons and fermions quite natural in three spatial dimensions. In (effective) two dimensions, the recent experimental evidence of intermediate statistics (anyons) (Bartolomei et al. 2020) comfort that topology (of the braids) provides a fertile soil for our understanding of quantum particles.
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Preprints, Working Papers, ...
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Submitted on : Friday, November 19, 2021 - 4:36:31 PM
Last modification on : Tuesday, January 11, 2022 - 5:56:35 PM

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Amaury Mouchet. Identity and difference: how topology helps to understand quantum indiscernability. 2021. ⟨hal-03437069⟩



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