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.

First look at continuous spin gravity: Time delay signatures

This paper develops a formalism for coupling matter to continuous spin gravity and calculates time-delay signatures in gravitational wave detectors, suggesting that current and future instruments could constrain the continuous spin scale ρg\rho_g to be below 1014\sim 10^{-14} eV for ground-based interferometers and 1024\sim 10^{-24} eV for pulsar timing arrays.

Shayarneel Kundu, Philip Schuster, Natalia Toro2026-05-14⚛️ gr-qc

AdS3 axion wormholes as stable contributions to the Euclidean gravitational path integral

This paper generalizes the stability of Euclidean Giddings-Strominger axion wormholes from 4D Minkowski to AdS3 spacetime by explicitly constructing and analyzing regular classical solutions, thereby establishing them as stable contributions to the 3D gravitational path integral with potential implications for resolving wormhole paradoxes like the factorization problem.

Andrew Loveridge, Hao-Yu Sun2026-05-14⚛️ hep-th

Baryons, Skyrmions and θθ-periodicity anomaly in chiral and vector-like gauge theories

This paper investigates baryons, Skyrmions, and θ\theta-periodicity anomalies in chiral and vector-like $SU(N)$ gauge theories with mixed-representation matter, revealing that Skyrmions are absent in chiral models (where heavy stable baryons suggest a mismatch requiring deeper dynamical mechanisms) but present in vector-like models, while also determining that domain wall dynamics in the Color-flavor locked phase match the anomaly without new degrees of freedom only when the color group is fully broken.

Stefano Bolognesi, Andrea Luzio, Giacomo Santoni2026-05-14⚛️ hep-th

Generation of gravitating solutions with Baryonic charge from Einstein-Scalar-Maxwell seeds

This paper establishes the first exact correspondence between Einstein-scalar-Maxwell theory and gauged Skyrme-Maxwell-Einstein models, enabling the transfer of electrovacuum solution-generating techniques to construct new exact solutions with nonvanishing baryonic charge, including a rotating configuration where baryonic charge quantization enforces a quantization of the Kerr rotation parameter.

Fabrizio Canfora, Anibal Neira, Seung Hun Oh2026-05-14⚛️ hep-th

Exploring the holographic entropy cone via reinforcement learning

This paper introduces a reinforcement learning algorithm to explore the holographic entropy cone by searching for graph realizations of target entropy vectors, successfully rediscovering known properties for N=3 and resolving the status of six "mystery" extreme rays for N=6 by proving three are realizable while suggesting the other three reveal unknown holographic inequalities.

Temple He, Jaeha Lee, Hirosi Ooguri2026-05-14⚛️ hep-th

Phase-resolved field-space distance bounds in ekpyrotic, bouncing and cyclic cosmologies

This paper establishes a phase-resolved field-space distance budget for non-inflationary cosmologies, deriving new constraints on ekpyrotic and bouncing models by integrating anisotropy suppression, quantum gravity-inspired cutoffs, and observational limits to demonstrate that achieving scale-invariant perturbations with a red tilt necessitates ultra-fast-roll dynamics, sharp turns, or significant negative field-space curvature.

Marcin Postolak2026-05-14⚛️ gr-qc