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

Filling the Shadow: A Propositional Model of Gravastar Accretion in f(R,Lm,T)f(R, L_m, T) Gravity

This paper proposes a phenomenological model of rotating gravastars within f(R,Lm,T)f(R, L_m, T) gravity to demonstrate how modified gravity parameters alter accretion dynamics and ISCO locations, potentially producing a distinct "filled-in" central shadow in interferometric observations as a testable signature against standard black holes.

Sandip Dutta2026-08-04
⚛️ high-energy theory

IR Black Hole Instabilities Trigger Species-Scale Particle Production

This paper proposes a novel UV-IR mechanism in quantum gravity where black holes reaching a critical temperature associated with a light tower of states undergo a phase transition that produces species-scale particles, a process shown to be distinct from and dominant over standard Hawking radiation across various black hole configurations.

Luis A. Anchordoqui, Alek Bedroya, Dieter Lüst, Houri-Christina Tarazi2026-08-04
⚛️ high-energy theory

Spectral Functions of J/ψJ/\psi Meson in Rotating Thermal Background from Holography

Using a soft-wall holographic model, this paper investigates the spectral functions of the J/ψJ/\psi meson in a rotating thermal background, revealing that global rotation induces energy shifts proportional to angular momentum for parallel momentum while causing significant triplet splittings and deviations from simple shifts for perpendicular momentum.

Xin-Li Sheng, Jun-Xia Chen, Defu Hou, Hai-Cang Ren2026-08-04
⚛️ quantum physics

Coordinate space representation for quantum simulation of scalar field theory

This paper proposes a coordinate-space representation for the ϕ4\phi^4 scalar field theory using a harmonic-oscillator basis, demonstrating that its effective band-diagonal structure enables controlled Hamiltonian truncations and significantly reduces the quantum resources required for simulation compared to standard momentum-space approaches.

Gaetan Bardy, Matthieu Saubanere, Adrian Tanasa2026-08-04
⚛️ high-energy theory

Aspects of the quantization of non-linear electrodynamics in an uniform magnetic background

This paper proposes canonical and path integral quantization methods for non-linear electrodynamics in a uniform magnetic background by linearizing the theory around the external field, and subsequently applies this framework to calculate ground state energy, analyze microcausality, derive Green functions, and compute the one-loop effective potential for the Modified Maxwell model.

M. J. Neves2026-08-04
⚛️ high-energy experiments

Impact of Higgs precision measurements at the LHC and FCC-ee on the spectrum of composite Higgs models

This paper investigates the minimal SU(4)Sp(4)\mathrm{SU}(4)\rightarrow\mathrm{Sp}(4) composite Higgs model by translating current and projected Higgs precision measurements from the LHC and FCC-ee into constraints on the vacuum alignment angle and the singlet pseudo-Nambu-Goldstone boson mass, demonstrating that future experiments will significantly tighten the lower bound on the singlet mass from approximately 440 GeV to over 2 TeV.

Reza Asgharzadeh Jelodar, Kazem Bitaghsir Fadafan, Giacomo Cacciapaglia2026-08-04