hep-th papers | Gist.Science

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 gravimagnetic dipole

This paper investigates a stationary vacuum Einstein solution comprising two non-extreme black holes with equal masses and opposite NUT charges connected by a Misner string, revealing that the inter-black-hole force transitions from distance-dependent attraction or repulsion to purely repulsive at small separations, while identifying a unique tensionless configuration that evades standard black hole uniqueness theorems and satisfies a generalized first law of mechanics.

Gérard Clément2026-03-20

⚛️ phenomenology

F-Term Hybrid Inflation, Metastable Cosmic Strings and Low Reheating in View of ACT

This paper proposes a left-right unified F-term hybrid inflation model within a $U(1)_{\rm R}\times U(1)_{B-L}$ extension of the MSSM that successfully dilutes monopoles, generates metastable cosmic strings consistent with PTA gravitational wave observations and recent ACT data, and predicts a low reheating temperature below 34 GeV alongside a PeV-scale SUSY mass spectrum.

C. Pallis2026-03-20

⚛️ high-energy theory

Fortuity and Supergravity

This paper identifies previously overlooked "singleton" states in the D1-D5 system, incorporates them into a generalized supergraviton index to achieve enhanced matching with CFT indices for $T^4$ and $K3$ , and uses this framework to define fortuitous indices and construct explicit fortuitous states for $\mathrm{Sym}^2(K3)$ .

Marcel R. R. Hughes, Masaki Shigemori2026-03-20

⚛️ phenomenology

QCD axion from chiral gauge theories

This paper presents calculable supersymmetric chiral gauge theory models where the Peccei-Quinn symmetry is spontaneously broken by non-perturbative dynamics, leading to a QCD axion scenario compatible with SU(5) grand unification that requires the GUT and PQ breaking scales to coincide with a SUSY breaking scale of approximately $10^9$ GeV.

Ryosuke Sato, Shonosuke Takeshita2026-03-20

⚛️ general relativity

General approach to vacuum nonsingular black holes: exact solutions from equation of state

This paper derives a closed-form metric for spherically symmetric static black holes obeying the vacuum equation of state $p_r = -\rho$ with an arbitrary tangential pressure equation of state, thereby unifying regular and singular configurations, including the Kiselev black hole.

O. B. Zaslavskii2026-03-20

⚛️ phenomenology

Flow between extremal one-point energy correlators in QCD

This paper demonstrates how QCD confinement drives a nontrivial flow between extremal one-point energy correlators by transforming fermionic matter into scalars, a phenomenon that can be reconstructed using perturbative and chiral perturbation theories and verified with existing experimental data.

Marc Riembau, Minho Son2026-03-20

🔢 mathematics

Complex Lies, Real Physics: The Role of Algebra Complexification

This paper establishes that the complexification of real Lie algebras provides the mathematical framework necessary to derive the irreducible representations of the proper Lorentz group, thereby demonstrating how the group's algebraic structure fundamentally determines the physical nature of matter and fields in the universe.

Tanguy Marsault, Laurent Schoeffel2026-03-20

⚛️ high-energy theory

Complexity of Einstein-Maxwell-non-minimal coupling $R^2F^2$ : the role of the penalty factor

This paper investigates holographic complexity in an Einstein-Maxwell theory with a non-minimal $R^2F^2$ coupling that models strange metal behavior, demonstrating how the complexity growth rate is governed by conserved charge, coupling strength, and the choice of bulk functional, which collectively deform the effective cost metric and control the dual theory's scrambling time.

Mojtaba Shahbazi, Mehdi Sadeghi2026-03-20

⚛️ high-energy theory

Quantized Dirac Fields in torsionful gravity: cosmological implications and links with the dark universe

This paper investigates how vacuum contributions from a quantized Dirac field in a torsionful FLRW spacetime act as a back-reaction on classical torsion, potentially modifying the inflationary phase and offering insights into the nature of the dark universe.

Antonio Capolupo, Sante Carloni, Luca Fabbri, Simone Monda, Aniello Quaranta, Stefano Vignolo2026-03-20

⚛️ general relativity

Ultraviolet Completion of the Big Bang in Quadratic Gravity

This paper proposes an asymptotically free quantum quadratic gravity framework that dynamically transitions from ultraviolet freedom to infrared slow-roll inflation, successfully accommodating current cosmological constraints and predicting a minimum tensor-to-scalar ratio of 0.01 to ensure a viable reheating phase into the standard radiation era.

Ruolin Liu, Jerome Quintin, Niayesh Afshordi2026-03-20

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hep-th

The gravimagnetic dipole

F-Term Hybrid Inflation, Metastable Cosmic Strings and Low Reheating in View of ACT

Fortuity and Supergravity

QCD axion from chiral gauge theories

General approach to vacuum nonsingular black holes: exact solutions from equation of state

Flow between extremal one-point energy correlators in QCD

Complex Lies, Real Physics: The Role of Algebra Complexification

Complexity of Einstein-Maxwell-non-minimal coupling R2F2R^2F^2R2F2: the role of the penalty factor

Quantized Dirac Fields in torsionful gravity: cosmological implications and links with the dark universe

Ultraviolet Completion of the Big Bang in Quadratic Gravity

Complexity of Einstein-Maxwell-non-minimal coupling $R^2F^2$ : the role of the penalty factor