hep-th papers | Gist.Science

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.

⚛️ high-energy experiments

Inelastic Singlet-Doublet Fermion Dark Matter in light of the 248 keV LZ event

Motivated by the recent LUX-ZEPLIN observation of a single 248 keV nuclear recoil event, this paper proposes an inelastic singlet-doublet fermion dark matter model extended with a scalar triplet, which naturally explains the absence of lower-energy events by suppressing elastic scattering while enabling inelastic transitions and simultaneously generating Majorana neutrino masses via the Type-II seesaw mechanism.

Debasish Borah, Sujit Kumar Sahoo, Narendra Sahu, Shashwat Sharma2026-09-09

⚛️ high-energy theory

SolutionsX: supergravity theories/solutions as code, with an agentic workflow for machine-verifiable physics

The paper introduces SolutionsX, a Mathematica package that transforms supergravity solutions and other xAct-based physics into machine-verifiable, executable code, enabling an agentic workflow where AI agents can automatically codify, verify, and extend complex theoretical results with high accuracy.

Vasil Dimitrov2026-09-09

⚛️ high-energy theory

Unitary quantum conformal Bondi-Metzner-Sachs field theories

This paper imposes unitarity constraints on two-dimensional field theories with quantum conformal Bondi-Metzner-Sachs symmetry, demonstrating that positivity requirements restrict the central charge to four specific values (1, 3/2, 13/7, and 2) whose primary spectra satisfy BPS-like and holographic inequalities.

Daniel Grumiller, Iva Lovrekovic2026-09-09

⚛️ high-energy theory

Diffeomorphism-invariant Approach to Asymptotically Safe Quantum Gravity

This paper introduces a novel, diffeomorphism-invariant framework for asymptotically safe quantum gravity that utilizes physics-informed renormalization group flows to compute the Reuter fixed point while preserving background independence and operator relevance counting.

Friederike Ihssen, Benjamin Knorr, Silas Mezger, Jan M. Pawlowski, Paul P. Sprenger2026-09-09

⚛️ high-energy theory

Scattering of Null strings - Flipped Vacuum & CHY

This paper investigates the scattering of null tensionless strings within the "flipped" vacuum framework, demonstrating that the resulting amplitudes for massless states naturally reproduce the Cachazo-He-Yuan (CHY) formulae through a novel class of vertex operators connected to the compactified null string.

Arjun Bagchi, Sachin Grover, Sharang Rajesh Iyer, Amartya Saha, Stephan Stieberger2026-09-09

⚛️ high-energy theory

Double Copy from the Flipped Null String

This paper demonstrates that the double-copy structure of tree amplitudes in the flipped vacuum of the bosonic null string arises from a Carrollian world-sheet, where specific momentum-winding and lattice sectors generate the kinematic and color factors necessary to reproduce higher-derivative gauge theories, Weyl-cubed gravity, and fundamental field-theory relations like BCJ and KLT.

Arjun Bagchi, Sachin Grover, Sharang Rajesh Iyer, Amartya Saha, Stephan Stieberger2026-09-09

⚛️ high-energy theory

Spherical DAHA as an algebra of framed BPS states

This paper establishes an isomorphism between the $GL_2$ skein algebra of the punctured torus and the $GL_2$ spherical double affine Hecke algebra by utilizing $\mathfrak{q}$ -nonabelianization in $SU(2)$ $\mathcal{N}=2^*$ gauge theory to unify various algebraic representations through the physical framework of framed BPS states and wall-crossing phenomena.

Kunal Gupta, Pietro Longhi2026-09-09

⚛️ high-energy theory

Wilson loops, M2-branes and strings

This paper establishes a universal semiclassical quantization framework for probe M2-branes and fundamental strings in asymptotically AdS $_4$ backgrounds, demonstrating that their partition functions correspond to half-BPS Wilson loop expectation values in 3D $\mathcal{N}\geq 2$ Chern-Simons-matter theories and revealing that the correct holographic ensemble choice allows M2-brane quantization to reproduce the full perturbative expansion in the gauge group rank $N$ .

Alexia Nix2026-09-09

⚛️ high-energy theory

Bogomol'nyi equations for Kruglov strings

This paper constructs Bogomol'nyi equations for Abelian gauge-Higgs vortices within Kruglov nonlinear electrodynamics by deriving first-order equations via the stressless method, analyzing the resulting constitutive maps to establish admissibility conditions for various exponents, and demonstrating that the BPS string tension remains purely topological and independent of the nonlinear parameters.

I. Praseyto, U. Ubaydillah, H. S. Ramadhan2026-09-09

⚛️ high-energy theory

Scalar Casimir Effect on a Two-Dimensional Sphere with a Wu--Yang Magnetic Monopole

This paper investigates the Casimir effect of a complex scalar field on a two-dimensional sphere threaded by a Wu--Yang magnetic monopole, demonstrating that a sufficiently strong monopole can reverse the Casimir pressure from attractive to repulsive.

Jun-Cheng Zhang, Xiao-Yin Pan, Juhao Wu, Qing-hai Wang2026-09-09

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