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.

The effective gravitational action of a massless chiral fermion and the absence of parity-odd contributions

Using the BPHZL renormalization scheme, the paper proves that the renormalized gravitational effective action for a massless chiral fermion up to fourth order in graviton fields contains no parity-odd contributions, is equivalent to half the action of a non-chiral Dirac fermion modulo parity-even counterterms, and yields a purely parity-even Weyl anomaly equal to half that of a Dirac fermion.

J. Anero, Carmelo P. Martin2026-05-28⚛️ hep-th

Fermionic Bubble Loop in Cosmological Collider Revisited: Exact signals from spectral and Mellin-Barnes methods

This paper presents an exact analytical calculation of fermionic bubble loop contributions to cosmological collider signals using parallel spectral and Mellin-Barnes methods, revealing that Yukawa interactions with the inflaton yield a vanishing bispectrum due to a field redefinition of tree-level counterparts.

Shuntaro Aoki, Zhehan Qin, Masahide Yamaguchi, Yuhang Zhu2026-05-28⚛️ hep-th

More about modular symmetries and non-invertible properties in magnetized compactifications

This paper investigates how modular symmetry in magnetized compactifications is violated as a group-like symmetry due to incomplete multiplet representations arising from Scherk-Schwarz phases, yet continues to govern coupling terms through the appearance of modular forms as coupling constants.

Tatsuo Kobayashi, Shuhei Miyamoto, Riku Nakano, Ryusei Nishida, Haruki Uchida2026-05-28⚛️ hep-th

Hilbert Space and Defect Hilbert Spaces Associated with Categorical Symmetries

This paper presents a quantum mechanical framework for analyzing the Hilbert spaces of BF-Chern-Simons theory with categorical symmetries, demonstrating that line operator actions are realized via convolution kernels and that the resulting eigenvalue formulas unify the Verlinde formula for finite groups and the semiclassical Hopf-link kernel for compact Lie groups through a common topological origin in $H^4(BG,\mathbb{Z})$ .

Qiang Jia, Jiahua Tian2026-05-28⚛️ hep-th

Radiative Correction to the Casimir Energy for Massive Scalar Field in The Network

This paper computes the leading-order and first-order radiative corrections to the Casimir energy of a massive, Lorentz-violating $\phi^4$ scalar field on a three-edge network by employing a systematic renormalization program with position-dependent counterterms and the box subtraction scheme, demonstrating that the resulting energies are consistently negative.

M. A. Valuyan2026-05-28⚛️ hep-th

Generation as Compositeness: A Subconstituent Interpretation of the $B$ -Lattice Flavor Hierarchy

This paper proposes a compositeness framework where fermion generations are elementary fields whose Yukawa hierarchies and mixing patterns arise from chains of spin-0 subconstituents governed by a $\mathbb{Z}_9$ discrete gauge symmetry, successfully predicting key observables like the neutrino mass, axion mass, and $\tan\beta$ from just two fundamental parameters.

Vernon Barger2026-05-28⚛️ hep-ph

Towards the two-loop electroweak corrections to the Drell-Yan process: the complete fermionic contributions

This paper presents the complete set of ultraviolet-renormalized and infrared-subtracted two-loop virtual fermionic contributions to the Drell-Yan process ( $u\bar u\to \mu^+\mu^-$ ) using an automated methodology, providing a crucial building block for next-to-next-to-leading order electroweak simulations.

Tommaso Armadillo, Simone Devoto, Michele Dradi, Alessandro Vicini2026-05-28⚛️ hep-ph

Non-integral geometry: additional term $f_A$ as a regularizing term

This paper introduces non-integral geometry as a generalized distribution theory where a non-symmetric integration measure yields a universal inverse operator with an additional term $f_A$ , which is proven to act as a regularizing contribution that eliminates complex singularities in image reconstruction.

I. V. Anikin2026-05-28🔢 math-ph

Krylov complexity has it all

This paper demonstrates that Krylov complexity fully encodes the dynamics of quantum operators by providing a recursive algorithm to derive Lanczos coefficients from its Taylor expansion, thereby establishing it as a complete characterization of operator evolution distinct from spread complexity.

Wolfgang Mück2026-05-28⚛️ hep-th

Complex BPS Black Holes in AdS $_3\times S^3$

This paper constructs smooth complex gravitational saddles representing the supersymmetric index for black holes in AdS $_3\times S^3$ within the STU model, demonstrating that these solutions emerge consistently from both complexified four-dimensional two-center BPS configurations and six-dimensional black strings, thereby satisfying the necessary conditions for global supersymmetry and thermodynamic consistency.

Finn Larsen, Kartik Sharma2026-05-28⚛️ hep-th

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