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.

⚛️ general relativity

The Cosmological CPT Theorem

This paper establishes a cosmological CPT theorem by demonstrating that a Z2×Z2\mathbb{Z}_2 \times \mathbb{Z}_2 symmetry group, where any two discrete symmetries (including Reflection Reality and CRT) imply the third, allows for the non-perturbative determination of wavefunction coefficient phases in de Sitter spacetime without analytic continuation, thereby providing a powerful tool for de Sitter holography.

Harry Goodhew, Ayngaran Thavanesan, Aron C. Wall2026-02-18
⚛️ general relativity

Deflection angle in the strong deflection limit: A perspective from local geometrical invariants and matter distributions

This paper presents an analytical framework linking the logarithmic divergence rate of photon deflection angles in the strong deflection limit to local, coordinate-invariant matter properties via the Einstein tensor, thereby resolving the puzzle of the universal value aˉ=1\bar{a}=1 in massless scalar field spacetimes and revealing a deep connection between strong gravitational lensing and quasinormal mode frequencies.

Takahisa Igata2026-02-18