aiqbench analysis
This research proposes using arrays of silicon quantum dots as detectors to identify dark matter interactions, effectively creating a unique "barcode" based on the scattering patterns of electrons within the nanocrystals. By leveraging the tunable electronic response of these semiconductors read out by Skipper CCDs, the study aims to discriminate between different theoretical models of dark matter mediators and interaction operators. The work represents a significant intersection where quantum material science is applied to solve fundamental problems in particle physics and cosmology.
Towards Quantum-Dot Detectors as Barcodes for Dark Matter Interactions
arXiv:2608.18204v1 Announce Type: cross Abstract: Quantum dots are tunable semiconductor nanocrystals that can be produced at industrial scales. We present the first ab initio calculation of the scattering of dark matter on electrons bound in quantum dots. The momentum-dependence of a quantum dot's electronic response depends on its morphology and on the dark matter mass, interaction operator, mediator coupling, and mediator mass. Therefore, the relative rates across an array of distinct quantum dot targets form a ``barcode'' that carries information about the nature of the dark matter interaction. We project the sensitivity of a detector concept in which a collection of independent target subunits, each loaded with silicon quantum dots of a particular morphology, are read out by Skipper CCDs. Given a future signal, this barcode could discriminate between interaction operators and mediator types. We quantify the discrimination power for a benchmark pair of models as a function of readout noise and exposure.
Abstract:Quantum dots are tunable semiconductor nanocrystals that can be produced at industrial scales. We present the first ab initio calculation of the scattering of dark matter on electrons bound in quantum dots. The momentum-dependence of a quantum dot's electronic response depends on its morphology and on the dark matter mass, interaction operator, mediator coupling, and mediator mass. Therefore, the relative rates across an array of distinct quantum dot targets form a ``barcode'' that carries information about the nature of the dark matter interaction. We project the sensitivity of a detector concept in which a collection of independent target subunits, each loaded with silicon quantum dots of a particular morphology, are read out by Skipper CCDs. Given a future signal, this barcode could discriminate between interaction operators and mediator types. We quantify the discrimination power for a benchmark pair of models as a function of readout noise and exposure.
High Energy Physics - Phenomenology (hep-ph); Cosmology and Nongalactic Astrophysics (astro-ph.CO); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); High Energy Physics - Experiment (hep-ex); Quantum Physics (quant-ph)
arXiv:2608.18204 [hep-ph]
(or arXiv:2608.18204v1 [hep-ph] for this version)
https://doi.org/10.48550/arXiv.2608.18204 arXiv-issued DOI via DataCite (pending registration)
Full text under the publisher's open licence · 188 words
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