REVIEW 12 cited by
Searches for light dark matter using condensed matter systems
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Identifying the nature of dark matter (DM) has long been a pressing question for particle physics. In the face of ever-more-powerful exclusions and null results from large-exposure searches for TeV-scale DM interacting with nuclei, a significant amount of attention has shifted to lighter (sub-GeV) DM candidates. Direct detection of the light dark matter in our galaxy by observing DM scattering off a target system requires new approaches compared to prior searches. Lighter DM particles have less available kinetic energy, and achieving a kinematic match between DM and the target mandates the proper treatment of collective excitations in condensed matter systems, such as charged quasiparticles or phonons. In this context, the condensed matter physics of the target material is crucial, necessitating an interdisciplinary approach. In this review, we provide a self-contained introduction to direct detection of keV--GeV DM with condensed matter systems. We give a brief survey of dark matter models and basics of condensed matter, while the bulk of the review deals with the theoretical treatment of DM-nucleon and DM-electron interactions. We also review recent experimental developments in detector technology, and conclude with an outlook for the field of sub-GeV DM detection over the next decade.
Forward citations
Cited by 12 Pith papers
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Spin-Dependent Scattering of Sub-GeV Dark Matter: Models and Constraints
A new calculation of spin-dependent sub-GeV dark matter phonon scattering shows only the light scalar mediator model retains testable parameter space, conditional on the supernova trapping window.
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Logarithmic Wavelets for Dark Matter--Phonon Scattering
A logarithmic Haar wavelet basis makes the vector space integration method practical for dark matter phonon scattering, covering the full momentum range with a single projection at sub-percent accuracy.
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Probing Supernova Neutrino Boosted Dark Matter with Collective Excitation
Galactic supernova neutrino boosted dark matter can produce plasmon excitations in silicon detectors, improving sub-MeV dark matter sensitivity by 3 to 4 orders of magnitude over Super-K.
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First-principles upper bounds on dark matter-electron scattering rates from condensed matter sum rules
Dark matter-electron scattering rates in isotropic materials are bounded from above by a universal expression depending only on plasma frequency, mass density, and static dielectric function.
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Coherence from interference: a solvable model of sub-GeV dark matter-nucleus scattering
In an exactly solvable 1D lattice, coherent and incoherent DM-nucleus structure factors differ only by a crystal-momentum delta function that becomes unimportant for n≥2 phonons, validating hybrid Inc+LW rate calculations.
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Migdal Ionization as a Probe of Light Dark Matter from Nuclear Transition
Migdal ionization of reactor-produced sub-MeV dark matter in TEXONO germanium yields new 95% C.L. limits on the reference DM–proton cross section for 0.01 MeV ≤ mχ ≲ 2.6 MeV.
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SPLENDOR: a novel detector platform to search for light dark matter with narrow-gap semiconductors
A dark matter detector platform combining a 60 meV-gap semiconductor (Eu5In2Sb6) with cryogenic HEMT readout and daily modulation analysis is presented, with projected sensitivity to sub-MeV dark matter.
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Detecting light dark matter with prompt-delayed events in neutrino experiments
The prompt-delayed knockout-neutron channel in KamLAND yields a sub-GeV dark matter-nucleon cross-section limit roughly one order of magnitude stronger than elastic nuclear recoil limits.
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Constraints on Strongly-Interacting Dark Matter from the James Webb Space Telescope
JWST NIRSpec dark calibration images exclude previously allowed high-cross-section parameter space for sub-GeV dark matter coupled to an ultralight dark photon, for subcomponent fractions as low as about 0.01%.
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Hunting axion dark matter with anti-ferromagnets: a case study with nickel oxide
Axion dark matter with meV-scale masses could be absorbed by magnons in nickel oxide, producing both resonant and broadband detection channels.
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Sub-GeV Dark Matter Under Pressure from Direct Detection
PandaX-4T S2-only data yields world-leading sub-GeV dark matter-electron scattering limits for heavy mediators in the 20-200 MeV range, although the result largely overlaps with the collaboration's own just-released analysis.
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2024 TASI Lectures: A Dark Matter Primer
A graduate-level primer covering the evidence for dark matter, the main cosmological production mechanisms (freeze-out, freeze-in, misalignment), and the direct detection formalism, with no new results.
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