⚛️ Category

hep-th

4348 papers

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.

⚛️ phenomenology

Theoretical uncertainties in reconstructing model parameters with gravitational waves from supercooled phase transitions

This paper demonstrates that reconstructing fundamental parameters of supercooled phase transition models from future gravitational-wave signals is severely limited by theoretical uncertainties, as the commonly used daisy-resummation scheme introduces errors that dominate over statistical reconstruction uncertainties compared to a more rigorous high-temperature effective field theory approach.

Maciej Kierkla, Marek Lewicki, Philipp Schicho, Daniel Schmitt, Bogumila Swiezewska2026-07-21
⚛️ general relativity

Gravitational waves from parabolic encounters: A study of linear and nonlinear memory

This paper investigates gravitational wave memory effects in parabolic encounters using an effective field theory formalism, arguing that treating the parabolic case as a distinct idealized limit rather than a simple extrapolation of eccentric or hyperbolic scenarios reveals unique features in the zero frequency limit and challenges previous estimation methods.

Samik Dutta, Ankur Chhabra, Aritra Banerjee, Sajal Mukherjee, Subhendra Mohanty2026-07-20
⚛️ high-energy theory

Spectrum of radiation from global strings and the relic axion density

This paper investigates the radiation spectrum from global strings to refine predictions for the relic axion density, finding that a "soft" exponential spectrum (rather than a "hard" one) and careful exclusion of the string's self-field significantly alter the estimated axion mass, yielding values ranging from approximately 4 to 160 μeV depending on the emission mechanism.

Richard A. Battye, Lukasz P. Bunio, Steven J. Cotterill, Pranav B. Gangrekalve Manoj2026-07-20
⚛️ high-energy theory

On conformal symmetry in large-NN quiver mechanics

This paper utilizes localization techniques to derive a fixed-point formula for the superconformal quiver index in cyclic abelian quivers, demonstrating that in a specific large-NN limit, the index captures previously inaccessible BPS contributions and clarifies the role of conformal symmetry in the microscopic description of extremal black holes within AdS2_2/CFT1_1 holography.

Andrea De Marco, Mustafa Mullahasanoglu, Joris Raeymaekers, Paolo Rossi, Gizem Sengör2026-07-20
⚛️ general relativity

Viscous Accretion Disks around Regular Black Holes Embedded in a Quintessence Dark Energy Field: Beyond the Novikov--Thorne Approximation

This paper presents a comprehensive relativistic framework for viscous accretion disks around rotating Hayward regular black holes embedded in a quintessence dark energy field, demonstrating that abandoning the Novikov-Thorne stress-free boundary condition reveals a viscosity-independent bolometric efficiency sensitive to the black hole's regularity and dark energy parameters, thereby offering a robust observational discriminator for future X-ray missions.

Sandip Dutta2026-07-20
🌀 nonlinear sciences

Scaling regimes of the Kuramoto-Sivashinsky equation from the functional renormalization group

This paper resolves inconsistencies in previous perturbative Wilsonian renormalization group approaches to the one-dimensional Kuramoto-Sivashinsky equation by employing the functional renormalization group with a smooth cutoff, thereby establishing flow to the Kardar-Parisi-Zhang fixed point and characterizing three universal scaling regimes (KPZ, Edwards-Wilkinson, and inviscid) across different momentum and frequency scales.

Liubov Gosteva, Nicolás Wschebor, Léonie Canet2026-07-20