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.

⚛️ high-energy theory

Directly Probing Neutrino Interactions through CMB Phase Shift Measurements

This paper establishes a robust framework for constraining non-standard neutrino interactions by demonstrating that the characteristic phase shift in CMB acoustic oscillations retains its functional form even with temperature-dependent scattering rates, allowing researchers to use Planck and ground-based telescope data to confirm that neutrinos have been freely streaming since the early radiation-dominated epoch.

Gabriele Montefalcone, Subhajit Ghosh, Kimberly K. Boddy, Daven Wei Ren Ho, Yuhsin Tsai2026-03-18

⚛️ high-energy theory

Dark matter silences Cepheids in the Galactic Center

This paper predicts that dark matter annihilation in the Galactic Center could suppress the formation of Cepheid variable stars by inhibiting their blue loop evolution, offering a novel method to indirectly probe dark matter properties through upcoming near-infrared surveys.

Djuna Croon, Tim Linden, Jeremy Sakstein2026-03-18

⚛️ high-energy theory

How to get an interacting conformal line defect for free theories

This paper argues that interacting conformal line defects can exist in free quantum field theories by breaking inversion symmetry, a mechanism demonstrated through a special sign-changing cross ratio and illustrated with a free scalar field coupled to fermions via a Yukawa term.

Samuel Bartlett-Tisdall, Dongsheng Ge, Christopher P. Herzog2026-03-18

⚛️ lattice

Equivalent class of Emergent Single Weyl Fermion in 3d Topological States: gapless superconductors and superfluids Vs chiral fermions

This paper proposes a generic approach using spontaneous $U(1)$ symmetry breaking to construct 3D lattice models that evade the no-go theorem and yield a single Weyl fermion in the infrared limit, demonstrating that these models form an equivalent class with gapless superconductors and superfluids across three distinct symmetry-breaking pathways.

Gabriel Meyniel, Fei Zhou2026-03-18

⚛️ high-energy theory

Running Couplings in High-Temperature Effective Field Theory

This paper computes the two-loop renormalization-group evolution of couplings in a three-dimensional effective field theory describing the electroweak phase transition, accounting for both tree-level and radiatively induced barriers to assess the impact of higher-order corrections on perturbative calculations and lattice simulations.

Mikael Chala, Andrii Dashko, Guilherme Guedes2026-03-18

⚛️ high-energy theory

Asymptotically (un)safe scattering amplitudes from scratch: a deep dive into the IR jungle

This paper demonstrates that while asymptotic safety provides a fixed point for quantum gravity, standard approximation methods like derivative expansions and RG improvement fail to correctly predict scattering amplitudes in massless theories, necessitating full momentum-dependent computations to resolve infrared subtleties and ensure boundedness.

Benjamin Knorr2026-03-18

🔬 physics

Three-Dimensional Modified Dirac Oscillator in Standard and Generalized Doubly Special Relativity

This paper presents an exactly solvable three-dimensional model of the Dirac oscillator within Standard and Generalized Doubly Special Relativity frameworks, demonstrating how Planck-scale deformations modify the energy spectrum and introduce branch-dependent shifts for particle and antiparticle states while preserving the system's fundamental oscillator-spinor structure.

Abdelmalek Boumali, Nosratollah Jafari2026-03-18

⚛️ phenomenology

Cosmological Collider Searches beyond the Hubble Scale with Planck Data

Using Planck data, this paper conducts the first cosmological collider searches for primordial non-Gaussianity mediated by heavy scalar particles, finding no evidence for masses near the Hubble scale but reporting a $1.7\sigma$ global hint of non-zero non-Gaussianity for parametrically heavier particles excited by a chemical potential.

Soubhik Kumar, Qianshu Lu, Zhong-Zhi Xianyu, Yisong Zhang2026-03-18

⚛️ high-energy theory

Bridging Worldsheet CFTs and Wormholes

This paper presents examples of worldsheet conformal field theories that describe string propagation through target space wormholes, including those with string-scale throats inaccessible to supergravity, and interprets a specific conformal manifold as mediating a transition between a closed universe and a wormhole.

Yoav Zigdon2026-03-18

⚛️ high-energy theory

Negative running of gravitational positivity

This paper demonstrates that while certain non-minimal interactions in effective field theories induce a negative one-loop renormalization group running of Wilson coefficients, gravitational loops generate dominant positive infrared contributions that preserve dispersive bounds, provided the number of non-minimally coupled particles respects the species bound.

J. Fernandez, M. Ruhdorfer, J. Serra2026-03-18

← Previous Next →