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.

⚛️ nuclear experiments

Running coupling effects in the anti-collinear resummation in high energy evolution

This paper investigates how the running of the QCD coupling affects anti-collinear resummation in JIMWLK evolution, deriving a resummed BFKL kernel that reveals a significant reduction in the Pomeron intercept due to combined resummation and coupling effects, despite a surprising cancellation that leaves the characteristic function at γ=1\gamma=1 unchanged.

Alex Kovner, Michael Lublinsky, Maxim Nefedov, Vladimir Skokov2026-07-13
⚛️ high-energy theory

TTˉT\bar{T} deformation and multiple-flavor Lorentzian threads

This paper derives deformation-induced corrections to generalized holographic complexity in finite cut-off holography using Fefferman-Graham expansions, revealing a systematic expansion in Willmore-type functionals and a natural interpretation as multiple-flavor Lorentzian threads that connect finite cut-off holography, generalized complexity, and non-local computational structures.

Mojtaba Shahbazi, Mehdi Sadeghi2026-07-13
⚛️ high-energy theory

Circuit and Krylov complexity of primordial perturbations of modified gravity in inflation

This paper investigates and compares the quantum circuit and Krylov complexities of primordial curvature perturbations in canonical scalar-field inflation versus the modified gravity f(ϕ,R)f(\phi,R) model, revealing that while the latter enhances squeezed strength and leads to a smaller growth in Krylov complexity, it induces a more pronounced evolution in circuit complexity, particularly after horizon exit.

Tao Li, Hai-Bing Fu2026-07-13
⚛️ high-energy theory

Dynamics of Biased Domain Walls: The Rocket Effect

This paper demonstrates that in scalar field theories with degenerate vacua, the vacuum-dependent scalar field mass induces an anisotropic emission of radiation from domain walls, creating a "rocket effect" that biases their evolution toward the lower-mass vacuum and accelerates network decay, a mechanism distinct from and more dominant than potential barrier asymmetries.

R. B. Vilhena, P. P. Avelino, C. dos Santos2026-07-13
🔬 physics

Report on the Advanced Linear Collider Study Group (ALEGRO) Workshop 2026

This report summarizes the 7th ALEGRO workshop held in March 2026, which brought together the international community to review progress in advanced wakefield accelerators, discuss the design of a future 10 TeV linear collider, and explore applications ranging from high-energy physics to free-electron lasers and AI-driven accelerator control.

L. Verra, P. Muggli, B. Cross, E. Adli, R. Babjak, T. Barklow, F. Bencivenga, C. Benedetti, C. Benedetti, M. Buscher, S. (…)2026-07-13
⚛️ general relativity

Equivalence Principle for Quantum Mechanics in the Heisenberg Picture

This paper establishes an exact quantum observable analog of the weak equivalence principle for relativistic quantum particles within the Heisenberg picture by deriving quantum geodesic equations from Hamiltonian evolution, while exploring their implications for projective measurements, noncommutative geometry, and a quantum gravity framework based on quantum coordinate transformations.

Otto C. W. Kong2026-07-10
⚛️ high-energy theory

Two-loop renormalization and running of galaxy bias

This paper systematically extends the framework of galaxy bias renormalization to two-loop order by deriving explicit renormalization results for a minimal basis of 29 deterministic operators, incorporating stochasticity, and establishing two-loop renormalization group equations that reveal enhanced UV sensitivity and suggest potential applications of quantum field theory resummation techniques.

Thomas Bakx, Mathias Garny, Henrique Rubira, Zvonimir Vlah2026-07-10