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 theory

Chern-Simons gravitational term coupled to a spectator field

This paper investigates a multi-field inflationary scenario where the Chern-Simons gravitational term is coupled to a massive spectator field rather than the inflaton, deriving the resulting parity-violating interactions and demonstrating that they produce distinctive parity-odd shapes in primordial scalar-tensor bispectra while establishing constraints on the model's couplings and non-Gaussianity amplitudes.

Giorgio Orlando2026-04-16
⚛️ high-energy theory

Comparative Study of Indicators of Chaos in the Closed and Open Dicke Model

This paper provides a systematic comparative study of chaos indicators in closed and open Dicke models, revealing that spectral form factors can exhibit chaotic signatures even in the regular closed regime while demonstrating that the dissipative spectral form factor robustly identifies the concurrence of the superradiant phase transition and a shift to Ginibre Unitary Ensemble statistics in the open system.

Prasad Pawar, Arpan Bhattacharyya, B. Prasanna Venkatesh2026-04-16
⚛️ high-energy theory

Hyperscaling of Fidelity and Operator Estimations in the Critical Manifold

By formulating the renormalization group as a quantum channel, this paper establishes hyperscaling relations for ground-state fidelity in critical quantum field theories, demonstrating that expectation values of slow momentum modes can be accurately approximated by their fixed-point limits to improve the efficiency of numerical and analytical simulations.

Matheus H. Martins Costa, Flavio S. Nogueira, Jeroen van den Brink2026-04-16
⚛️ high-energy theory

A Novel Construction of de Sitter Vacua in Heterotic String Theory

This paper presents a concrete mechanism for constructing metastable four-dimensional de Sitter vacua in heterotic string theory by combining non-geometric R-flux compactifications, governed by Malcev and Sabinin algebra structures, with leading α\alpha' torsion-squared corrections and hidden-sector gaugino condensation to stabilize the scalar potential at positive energy.

Mir Faizal, Arshid Shabir2026-04-16
⚛️ high-energy theory

Unitary and Analytic Renormalisation of Cosmological Correlators

This paper resolves discrepancies in the literature regarding ultraviolet divergences in cosmological correlators by demonstrating that various renormalization schemes yield consistent, unitary results and establishing a practical framework where the imaginary part of one-loop wavefunction coefficients is universally fixed by the logarithmic running of the real part.

Diksha Jain, Enrico Pajer, Xi Tong2026-04-16
⚛️ high-energy theory

Hyperbolic Fracton Model, Subsystem Symmetry and Holography III: Extension to Generic Tessellations

This paper generalizes the Hyperbolic Fracton Model to generic tessellations, revealing that while the resulting subsystem symmetries and fracton mobility exhibit a far richer and geometry-dependent complexity compared to flat lattices, the model's core holographic features, including subregion duality and area-law entropy scaling, remain robustly valid.

Yosef Shokeeb, Ludovic D. C. Jaubert, Han Yan2026-04-16
⚛️ high-energy theory

Every Wrinkle Carries A Memory: An Integro-differential Bootstrap for Features in Cosmological Correlators

This paper extends the cosmological bootstrap program to scale-breaking scenarios by deriving integro-differential boundary equations with memory kernels for heavy fields with time-dependent masses, enabling analytical and numerical solutions that reveal exponentially enhanced primordial features in the squeezed bispectrum.

Sadra Jazayeri, Xi Tong, Yuhang Zhu2026-04-16