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.

TeV Scale Quark-Lepton Unification

This paper proposes a TeV-scale quark-lepton symmetric Pati-Salam model featuring a softly broken Z2Z_2 symmetry that suppresses tree-level flavor violations, allowing a leptoquark gauge boson to be as light as 1.1 TeV (though LHC constraints on associated ZZ' bosons push the limit to 4.3 TeV) while predicting distinctive signatures like vector-like down-type quarks with baryon number 2/32/3 and specific neutrino mass generation mechanisms.

K. S. Babu, Sumit Biswas, Shaikh Saad2026-04-13⚛️ hep-ph

Physical constraints on the Maldacena-Shenker-Stanford chaos-bound in black hole spacetimes

This paper resolves contradictions regarding Maldacena-Shenker-Stanford chaos-bound violations in black hole spacetimes by establishing a self-consistent framework that distinguishes between apparent violations caused by inconsistent angular momentum parameter choices and genuine physical violations arising from higher-order curvature corrections.

Terkaa Victor Targema, Kazuharu Bamba, Riasat Ali, Usman Zafar2026-04-13⚛️ hep-th

Generalized Virial Identities: Radial Constraints for Solitons, Instantons, and Bounces

This paper derives a continuous family of generalized virial identities parameterized by a radial weighting exponent α\alpha to systematically decompose global constraints for O(nn) symmetric configurations, enabling the analytical verification of BPS solutions and the numerical diagnosis of core versus tail inaccuracies in non-BPS systems like bounces, vortices, and sphalerons.

Jonathan Lozano-Mayo2026-04-13🌀 nlin

Cosmological perturbation theory of primordial compact sources

This paper develops a position-space cosmological perturbation theory in a generalized harmonic gauge to model localized primordial gravitational wave sources, deriving an exact hypergeometric Green's function for power-law cosmologies that enables closed-form expressions for metric perturbations up to quadrupolar order while highlighting the non-compact nature of such sources due to fluid fluctuations.

Geoffrey Compère, Sk Jahanur Hoque2026-04-13⚛️ gr-qc

A Computational Companion to Transient de Sitter and Quasi de Sitter States in SO(32) and E_8 X E_8 Heterotic String Theories I: Formalisms

This paper constructs four-dimensional de Sitter space as an excited Glauber-Sudarshan state within M-theory and its dual heterotic string theories to evade vacuum-based no-go theorems, deriving the necessary effective field theory conditions equivalent to the null energy condition and analyzing constraints from axionic cosmology.

Archana Maji2026-04-13⚛️ hep-th

Vafa-Witten invariants from wall-crossing for framed sheaves

This paper computes the vertical contribution to the refined SU(r)\mathrm{SU}(r) Vafa-Witten partition function on surfaces with non-zero holomorphic 2-forms by expressing it through χy\chi_y-genera of framed sheaves on P2\mathbb{P}^2 and proving new wall-crossing identities via mixed Hodge modules, thereby verifying conjectures of Göttsche et al. and confirming the vertical part of the Vafa-Witten formula for rank r=2r=2.

Noah Arbesfeld, Martijn Kool, Ties Laarakker2026-04-13⚛️ hep-th

Capturing the Atiyah-Patodi-Singer index from the lattice

This paper presents a lattice gauge theory formulation that successfully captures the continuum Atiyah-Patodi-Singer index for Dirac operators on domains with compact boundaries by exploiting its equivalence to the spectral flow of generalized domain-wall fermion operators, proving its validity for sufficiently small lattice spacings.

Shoto Aoki, Hajime Fujita, Hidenori Fukaya, Mikio Furuta, Shinichiroh Matsuo, Tetsuya Onogi, Satoshi Yamaguchi2026-04-13⚛️ hep-lat

Homological origin of transversal implementability of logical diagonal gates in quantum CSS codes

This paper establishes a homological framework that characterizes the transversal implementability of logical diagonal gates in quantum CSS codes by identifying Bockstein-type obstruction maps as necessary and sufficient conditions for lifting gates to finer rotation angles, thereby unifying and generalizing existing algebraic constraints like divisibility and triorthogonality.

Junichi Haruna2026-04-13🔢 math-ph