Hep-Th, or high-energy theoretical physics, explores the fundamental building blocks of our universe and the forces that govern them. Researchers in this field use complex mathematics to understand everything from subatomic particles to the behavior of black holes, often pushing the boundaries of what we know about space and time.

At Gist.Science, we monitor the arXiv repository to ensure you stay ahead of the curve in this rapidly evolving discipline. For every new preprint uploaded to arXiv under this category, our team generates both accessible plain-language overviews and detailed technical summaries, making cutting-edge research understandable regardless of your background.

Below are the latest papers in high-energy theoretical physics, curated to help you navigate the most significant recent discoveries.

⚛️ nuclear theory

Deciphering the dynamics of nuclear collisions with elongated structure of 20^{20}Ne

This study investigates the impact of the intrinsic geometric structure and α\alpha-clustering of the 20^{20}Ne nucleus on particle production in 20^{20}Ne-20^{20}Ne collisions at 5.36 TeV, revealing that while these structural features significantly modify charged particle multiplicity, their effects on transverse momentum spectra and mean transverse momentum remain modest in central collisions within a non-hydrodynamic framework.

Deependra Sharma, Arpit Singh, Sadhana Dash2026-03-18
⚛️ high-energy theory

Directly Probing Neutrino Interactions through CMB Phase Shift Measurements

This paper establishes a robust framework for constraining non-standard neutrino interactions by demonstrating that the characteristic phase shift in CMB acoustic oscillations retains its functional form even with temperature-dependent scattering rates, allowing researchers to use Planck and ground-based telescope data to confirm that neutrinos have been freely streaming since the early radiation-dominated epoch.

Gabriele Montefalcone, Subhajit Ghosh, Kimberly K. Boddy, Daven Wei Ren Ho, Yuhsin Tsai2026-03-18
⚛️ lattice

Equivalent class of Emergent Single Weyl Fermion in 3d Topological States: gapless superconductors and superfluids Vs chiral fermions

This paper proposes a generic approach using spontaneous U(1)U(1) symmetry breaking to construct 3D lattice models that evade the no-go theorem and yield a single Weyl fermion in the infrared limit, demonstrating that these models form an equivalent class with gapless superconductors and superfluids across three distinct symmetry-breaking pathways.

Gabriel Meyniel, Fei Zhou2026-03-18