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

A Lapse in the Cosmological Constant Problem with Bulk Dynamics

This paper extends a proposed solution to the cosmological constant problem by introducing z=1z=1 deformations that restore dynamics in a compact extra dimension, demonstrating that vacuum energy cancellation persists in the background while identifying specific conditions required to avoid ghost instabilities and address residual Casimir contributions.

Justin Khoury, Benjamin Muntz, Antonio Padilla2026-08-14
⚛️ high-energy theory

Stabilizer complexity and the Python's lunch

This paper demonstrates that the stabilizer complexity of a reduced density matrix in a holographic CFT, quantified by Wigner negativity, remains constant in the absence of a bulk "Python's lunch" but becomes exponentially large when such a geometric feature exists, directly linking the difficulty of classical simulation to the area difference between outer and minimal extremal surfaces.

Abhirup Bhattacharya, Jatin Narde, Onkar Parrikar, Suprakash Paul2026-08-14
⚛️ high-energy theory

Constraints on the O(n)O(n) model from a negative number of flavors

By treating the number of flavors nn as a variable and exploiting the duality between O(n)O(n) and Sp(n)Sp(-n), this paper derives non-perturbative constraints on the O(n)O(n) model's operator spectrum, revealing novel degeneracies that enable the calculation of two-loop anomalous dimensions and new non-renormalization results without additional loop computations.

Daniele Artico, Jasper Roosmale Nepveu2026-08-14
⚛️ phenomenology

Singlet-Doublet fermion origin of dark matter, neutrino mass and inverse first-order electroweak phase transition

This paper proposes a scotogenic model extending the Standard Model with singlet-doublet fermions and right-handed neutrinos to simultaneously explain dark matter, Dirac neutrino masses, and an inverse first-order electroweak phase transition that produces observable gravitational waves, with its parameter space testable by future collider, direct-detection, and cosmological experiments.

Debasish Borah, Indrajit Saha, Sujit Kumar Sahoo, Narendra Sahu, Shashwat Sharma2026-08-14
⚛️ general relativity

Quasitopological Gravity with Matter: Modified Double-Copy Approach

This paper extends the modified double-copy formalism to quasitopological gravity coupled to matter by mapping spherically symmetric field equations in DD-dimensional curved spacetime to an auxiliary nonlinear gauge field in flat (D+1)(D+1)-dimensional spacetime, thereby generating Kerr--Schild solutions for various matter sources including Maxwell, nonlinear electrodynamics, and Yang--Mills fields.

Valeri P. Frolov2026-08-14
⚛️ high-energy theory

Edge physics and the Casimir interaction in Maxwell--Chern--Simons theory on a strip

This paper investigates Maxwell-Chern-Simons theory on a strip using the Symanzik framework to derive admissible boundary conditions, establish two boundary U(1)U(1) current algebras, and calculate the Casimir interaction energy, revealing a transition from long-range power-law forces in the Maxwell limit to Yukawa-suppressed interactions due to topological mass in the full theory.

Nicola Maggiore2026-08-14
⚛️ general relativity

Waterfall-modulated α\alpha-attractors

This paper proposes and analyzes "waterfall-modulated" α\alpha-attractor models that incorporate hybrid-inspired features like potential uplifts and premature termination of inflation to continuously tune cosmological predictions, allowing for higher scalar spectral indices (nsn_s) and lower tensor-to-scalar ratios (rr) while preserving the characteristic α\alpha-attractor relation.

Renata Kallosh, Andrei Linde, Yusuke Yamada2026-08-14
⚛️ high-energy theory

D4-branes wrapped on topological disks from matter-coupled F(4) gauged supergravity

This paper investigates novel supersymmetric AdS4×ΣAdS_4 \times \Sigma solutions in matter-coupled F(4)F(4) gauged supergravity, which uplift to D4-D8-brane systems in massive type IIA theory and are holographically dual to either three-dimensional N=2N=2 SCFTs or five-dimensional SCFTs with codimension-2 conformal defects.

Patharadanai Nuchino, Parinya Karndumri2026-08-14