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

GREA and Dark Energy: A holographic correspondence

This paper proposes a holographic correspondence where the observed cosmic acceleration, traditionally attributed to a cosmological constant, is instead explained as an entropic effect arising from the thermodynamic properties of the boundary's quantum degrees of freedom, a model known as GREA that predicts distinct deviations from the standard Λ\LambdaCDM model in the growth of large-scale structures testable by upcoming surveys.

Juan García-Bellido2026-04-15
⚛️ high-energy theory

EFT of Dark Energy with Cosmic Chronometers: Reconstructing Background EFT Functions

This paper presents a model-independent framework that uses cosmic chronometer measurements of the Hubble parameter to directly reconstruct the background effective field theory functions of dark energy, enabling the testing of various cosmological models and the constraint of specific theories like quintessence without assuming a predefined scenario.

Fumiya Okamatsu, Kazufumi Takahashi2026-04-15
⚛️ high-energy theory

Quantum critical theories in a periodic potential: strange metallic thermoelectric and magnetotransport

This paper utilizes holographic models of near-extremal AdS black holes to demonstrate that 2D quantum critical theories with strong translational symmetry breaking and zero average chemical potential exhibit enhanced conductivity, bad-metal electrical transport with non-Drude thermal behavior, and approximately linear-in-field magnetoresistance.

Eric Nilsson, Koenraad Schalm2026-04-15
⚛️ general relativity

Quasinormal modes and their excitation beyond general relativity. II: isospectrality loss in gravitational waveforms

Through extensive time-domain numerical simulations of a Schwarzschild black hole in a cubic-in-curvature effective-field-theory extension of general relativity, this paper demonstrates that while the loss of isospectrality between polar and axial quasinormal modes complicates the identification of individual fundamental modes in gravitational waveforms, it can still provide evidence for non-general-relativistic physics.

Hector O. Silva, Giovanni Tambalo, Kostas Glampedakis, Kent Yagi2026-04-15
⚛️ high-energy theory

Emergent Hawking Radiation and Quantum Sensing in a Quenched Chiral Spin Chain

This paper investigates the emergence and detection of Hawking radiation in a quenched 1D chiral spin chain by mapping its dynamics to a curved spacetime Dirac fermion, revealing that while the radiation spectrum exhibits greybody-like deviations, a weakly coupled qubit detector can faithfully measure the Hawking temperature, whereas strong coupling obscures the thermal signature by thermalizing with the global environment.

Nitesh Jaiswal, S. Shankaranarayanan2026-04-15
⚛️ nuclear experiments

Search for the QCD Critical Point in High Energy Nuclear Collisions: A Status Report

This paper reviews recent STAR experiment results on net-proton multiplicity fluctuations from RHIC BES-II collisions to search for the QCD critical point by comparing fourth-order cumulant and factorial cumulant ratios with non-critical theoretical models while addressing initial volume fluctuations and outlining future research directions.

Yu Zhang, Zhaohui Wang, Xiaofeng Luo, Nu Xu2026-04-15