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Open research questions in Dark Matter and Cosmic Phenomena

236 gap statements mined from Dark Matter and Cosmic Phenomena papers in our 7.9M-paper local library, which holds 1,071 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • It highlights the need for a fresh perspective on the importance of spin in understanding the universe.

    One hundred years of spin: Fundamental physics, dark matter, exotic interactions, and all that · 2026 · DOI

  • Astronomical and cosmological observations provide overwhelming evidence for a non-luminous matter component, dark matter (DM), whose particle nature remains unknown.

    Illuminating Light Dark Matter with Fixed-Target Experiments · 2026

  • The paper identifies several challenges, including the need to develop a methodology that can handle high-dimensional event data, and the need to reduce the reliance on many of the corrections and cuts that are traditionally part of the analysis chain. The paper also states that the analysis is based on simulated data, and the results may not be directly applicable to real data.

    Model-independent searches of new physics in DARWIN with deep learning · 2026 · DOI

  • A concise overview of the current status, key limitations, and future goals is provided in Table 5. With continued innovation and international collaboration, cryogenic detectors are poised to remain a leading platform in the search for new physics in the coming decades. Table 5: Summary of present status, bottlenecks, and future directions for cryogenic rare-event searches.

    Rare event searches using cryogenic detectors via direct detection methods · 2026 · DOI

  • The study of dark matter is challenging due to its unknown properties. The Lμ-Lτ model is a complex gauge theory that requires careful analysis. The neutrino oscillation behavior in the dark halo is difficult to understand due to the presence of multiple interactions.

    Neutrino oscillation in dark matter with L μ − L τ · 2026 · DOI

  • Further study of the Lμ-Lτ model is needed to constrain its parameter space. Investigation of the neutrino oscillation behavior in the dark halo is necessary to understand the implications of the study. The results of the paper can be used to inform direct and indirect dark matter detection experiments.

    Neutrino oscillation in dark matter with L μ − L τ · 2026 · DOI

  • The need for re-analysis of data from axion search experiments to derive dark photon constraints. The importance of accounting for scanning timing information.

    Dark photon dark matter constraints at the Taiwan Axion Search Experiment with Haloscope · 2026 · DOI

  • The effect of varying observation latitude, different integration time distributions, and seasonal variations in dark matter halo velocity dispersion on dark photon sensitivity has not been explored.

    Dark photon dark matter constraints at the Taiwan Axion Search Experiment with Haloscope · 2026 · DOI

  • Prior work has not investigated the effects of strongly-interacting dark matter on neutron stars.

    Strongly interacting dark matter admixed neutron stars · 2026 · DOI

  • The dependence on the ordinary matter equation of state for mass-radius measurements in dark matter admixed neutron stars is noted but not systematically characterized; controlled variations across different ordinary matter EoS models (beyond the three employed) are needed to quantify this sensitivity.

    Strongly interacting dark matter admixed neutron stars · 2026 · DOI

  • A quantitative fit to the Planck power spectrum requires modifying a Boltzmann code (CAMB/CLASS) with the impedance Poisson equation following the recipe in §10.5 — computational work, not a conceptual gap. (ii) The interpolation function.

    Impedance Contrast Theory: Galaxy Rotation Curves and Gravitational Lensing from Vacuum Impedance Susceptibility · 2026 · DOI

  • The 'Core Temperature Problem' is a major gap in our understanding of stellar fusion. The lack of a deterministic model for stellar fusion is a significant gap in the field.

    The Deterministic Piston: Dark Matter Desequestration as the Kinetic Driver of Stellar Nucleosynthesis and Cosmic Evolution · 2026 · DOI

  • A detailed analysis incorporating the effects of Pauli blocking or Bose enhancement is needed. The study of cannibal dark matter in other astrophysical contexts is warranted.

    Asymmetric cannibal dark matter: constraints from neutron star · 2026 · DOI

  • The theory remains qualitative, with unknown constants. No first-principles prediction of H0, void growth rate, or transition redshift. Calibration is required using supernova, BAO, and CMB data.

    Version 1.6 ‒ Dark Matter Eliminated: Cosmic Energy Compression Explains Flat Galaxy Rotation Curves Without Invisible Mass · 2026 · DOI

  • The detection of minicharged particles at accelerators is a challenging task. The theoretical understanding of minicharged particles is still limited. The experimental searches for minicharged particles require high-energy accelerators and sophisticated detectors.

    Minicharged particles at accelerators: progress and prospects · 2026 · DOI

  • The paper suggests that the methodology can be applied to other rare physics searches with xenon-based TPCs. The paper also suggests that the method can be used to extract maximal information from the high-dimensional event data produced by TPC experiments.

    Model-independent searches of new physics in DARWIN with deep learning · 2026 · DOI

  • The following six research directions are explicitly identified as beyond the scope of the present paper. Each represents a self-contained calculation or simulation whose completion will either validate or constrain the R5+ framework at a quantitative level.

    UNIFIED SPACETIME DYNAMICS IN THE R5+ FRAMEWORK: GALACTIC ROTATION CURVES, BULLET CLUSTER OFFSETS, AND BLACK HOLE REMNANTS FROM A SYMMETRON-PROCA SECTOR · 2026 · DOI

  • To explore the implications of the framework for our understanding of the universe's large-scale structure and expansion history. To test the framework against observational data.

    COSMOS Threshold Cosmology · 2026 · DOI

  • Strong frequency-detuning sensitivity and photon-number-dependent errors in conventional control pulses.

    Benchmarking dark matter search using a parity-check protocol with machine-learning optimized pulses · 2026 · DOI

  • The experiment was performed without an applied magnetic field, - The cavity quality factors degrade substantially in multi-tesla static magnetic fields, - The storage lifetime is limited to the tens-of-microseconds…

    Benchmarking dark matter search using a parity-check protocol with machine-learning optimized pulses · 2026 · DOI

  • Ongoing searches for exotic spin–dependent interactions that may reveal the nature of dark matter and its connection to spacetime geometry - Further investigation of the role of spin in quantum mechanics and its connection to fundamental…

    One hundred years of spin: Fundamental physics, dark matter, exotic interactions, and all that · 2026 · DOI

  • Further study of the 'Piston-Ignition' model and its implications for stellar nucleosynthesis. Investigation of the role of dark matter in the universe.

    The Deterministic Piston: Dark Matter Desequestration as the Kinetic Driver of Stellar Nucleosynthesis and Cosmic Evolution · 2026 · DOI

  • To assume a mathematical form for the radiation push as a function of void fraction and radiation energy density. To calibrate constants using the distance-redshift relation from Pantheon+ supernovae. To predict the Hubble constant from CMB and from local measurements.

    Version 1.6 ‒ Dark Matter Eliminated: Cosmic Energy Compression Explains Flat Galaxy Rotation Curves Without Invisible Mass · 2026 · DOI

  • Future experimental searches for minicharged particles at accelerators such as the LHC and the SBN Program at Fermilab. Theoretical studies of minicharged particles in various beyond the Standard Model physics scenarios. The development of new detection techniques and technologies to detect minicharged particles.

    Minicharged particles at accelerators: progress and prospects · 2026 · DOI

  • 2Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, Wien, Austria.

    The CRESST experiment towards the next generation of sub GeV direct dark matter detection · 2026 · DOI

Most-cited papers in Dark Matter and Cosmic Phenomena

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This page shows what the Dark Matter and Cosmic Phenomena literature already flags as unresolved. To narrow it to your specific question, search the Research Gap Finder: the search is free with a free account and lists the papers closest to your topic first. Unlocking that topic (50 credits, charged once) fills the comparison table from our 7.9M-paper local library and writes the gaps from its rows.

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Open questions raised by papers listed on this page include: (1) Further study of the Lμ-Lτ model is needed to constrain its parameter space (“Neutrino oscillation in dark matter with L μ − L τ”, 2026); (2) The effect of varying observation latitude, different integration time distributions, and seasonal variations in dark matter halo velocity dispersion on dark photon sensitivity has not been explored (“Dark photon dark matter constraints at the Taiwan Axion Search Experiment with…”, 2026); (3) The lack of a deterministic model for stellar fusion is a significant gap in the field (“The Deterministic Piston: Dark Matter Desequestration as the Kinetic Driver of…”, 2026); (4) A detailed analysis incorporating the effects of Pauli blocking or Bose enhancement is needed (“Asymmetric cannibal dark matter: constraints from neutron star”, 2026); (5) Astronomical and cosmological observations provide overwhelming evidence for a non-luminous matter component, dark matter (DM), whose particle nature remains unknown (“Illuminating Light Dark Matter with Fixed-Target Experiments”, 2026). 236 gap statements have been mined from Dark Matter and Cosmic Phenomena papers in our 7.9M-paper local library, which holds 1,071 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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