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.

Chiral first order phase transition at finite baryon density and zero temperature from self-consistent pole masses in the linear sigma model with quarks

Using the two-flavor Linear Sigma Model with quarks at one-loop order, this study demonstrates that the chiral phase transition at zero temperature and finite baryon density is of first order, occurring when the chemical potential equals the vacuum quark mass, as evidenced by discontinuities in the chiral condensate, particle masses, couplings, and the speed of sound.

Alejandro Ayala, Bruno El-Bennich, Ricardo L. S. Farias, Luis A. Hernández, Bruno S. Lopes, Luis C. Parra L., Renato Zamora2026-04-23⚛️ nucl-th

No planar degeneracy for the Landau gauge quark-gluon vertex

This paper solves the Dyson-Schwinger equations for the Landau gauge quark-gluon vertex in quenched QCD to demonstrate that while its transverse form factors exhibit weak angular dependence, this does not constitute planar degeneracy, while simultaneously confirming that dynamical chiral symmetry breaking relies on a mutually generated tensor coupling and that the resulting quark propagator is consistent across different Yang-Mills solutions with poles only on the real time-like axis.

Georg Wieland, Reinhard Alkofer2026-04-23⚛️ nucl-th

Technically Natural Suppression of Fifth Force

This paper proposes a Z2Z_2-symmetric mirror extension of the Standard Model within a bi-conformal gravity framework where spontaneous scale invariance breaking generates a light scalaron that naturally suppresses fifth-force couplings via symmetry, predicting a specific correlation between the force strength and scalar mass that aligns with next-generation experimental targets without relying on environmental screening mechanisms.

Kensuke Homma, Taishi Katsuragawa, Shinya Matsuzaki2026-04-23⚛️ hep-ex