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.

🔬 atomic physics

Constraints on Yukawa-type New Forces from the Lamb Shift in Muonic Hydrogen and Deuterium

This paper presents an analytical framework that transforms the Lamb shift energy calculation into a one-dimensional momentum-space convolution to derive model-independent constraints on Yukawa-type fifth forces using hydrogen and deuterium spectroscopy, revealing a resonance-like cancellation at a critical range and highlighting current spectroscopic precision as the primary limitation for detecting such interactions.

Chung-Chien Huang, Li-Bang Wang2026-07-08

⚛️ general relativity

Two fluid CFL strange quark stars with scalar dark matter: critical mass and mass gap implications

This study demonstrates that incorporating scalar bosonic dark matter into two-fluid color-flavor-locked strange quark star models allows for the existence of massive compact objects in the lower mass-gap region, such as the secondary component of GW190814, while maintaining qualitative compatibility with tidal deformability constraints from GW170817, noting that the dark matter component does not always form an extended halo as this depends on the model parameters.

J. Sedaghat, G. H. Bordbar, M. Haghighat, S. M. Zebarjad2026-07-08✓ Author reviewed ⓘ

⚛️ high-energy theory

Background-independent one-loop renormalization of tensor and scalar primordial spectra

This paper introduces a background-independent one-loop renormalization framework that analytically isolates and absorbs UV divergences into local counterterms using universal WKB behavior, thereby yielding finite, model-independent expressions for primordial scalar and tensor spectra without requiring specific background evolution or full field dynamics.

Guillermo Ballesteros, Jesús Gambín Egea, Flavio Riccardi2026-07-08

⚛️ general relativity

Quasinormal modes of scalar perturbations in Rastall thick brane

This paper investigates the quasinormal modes of scalar perturbations in a five-dimensional Rastall thick brane model, revealing that the Rastall parameter significantly influences the decay rates and oscillation frequencies of these modes while determining the power-law exponent of their late-time asymptotic tails.

Shan Huang, Chun-Chun Zhu, Tao-Tao Sui2026-07-08

⚛️ high-energy theory

Abelian 2-Form Gauge Theory: Basic Canonical Brackets and Nilpotency Property of Noether (Anti-)BRST Charges

This paper establishes the nilpotency and invariance of Noether (anti-)BRST charges in D-dimensional free Abelian 2-form gauge theory by deriving consistently modified charge versions that satisfy Dirac quantization conditions, utilizing basic canonical (anti)commutators, the Gauss divergence theorem, and equations of motion to overcome the limitations of standard Noether charges.

R. P. Malik2026-07-08✓ Author reviewed ⓘ

⚛️ phenomenology

Interplay of CPT-Violating and CPT-Conserving Lorentz Invariance Violation at DUNE

This study demonstrates that Lorentz invariance violation, particularly through CPT-violating SME coefficients like $a_{ee}$ , $a_{\tau\tau}$ , $a_{e\mu}$ , and $a_{e\tau}$ , significantly degrades the DUNE experiment's sensitivity to CP violation by introducing parameter-specific correlations and degeneracies that reduce discovery significance below the $5\sigma$ threshold.

Priyankush Deka, Arnab Sarker, Moon Moon Devi, Sushant K. Raut2026-07-08

🔬 physics

Higher topological charge in the QCD vacuum and axion cosmology

This paper demonstrates that gauge field configurations with higher topological charge modify the QCD vacuum's $\theta$ -dependence, leading to characteristic temperature variations in topological susceptibilities and a multi-instanton mechanism that enhances the production of axion dark matter.

Fabian Rennecke2026-07-07

⚛️ phenomenology

Gravitational Wave from Graviton Bremsstrahlung during Reheating

This paper revisits graviton production via inflaton decay during reheating to correct previous differential decay rate calculations, derive the resulting high-frequency stochastic gravitational wave background, and establish constraints from cosmological observations while projecting detection prospects for future microwave and space-based detectors.

Basabendu Barman, Nicolás Bernal, Yong Xu, Óscar Zapata2026-07-07

⚛️ general relativity

Classical gravitational anomalies of Liouville theory

This paper demonstrates that classical Liouville field theory cannot simultaneously preserve diffeomorphism invariance, Weyl invariance, and locality due to a genuine Virasoro center arising from a previously overlooked field-independent term, which forces a choice between Lorentz and conformal symmetry when generalizing the theory to curved space.

Pavel Haman, Alfredo Iorio2026-07-07

⚛️ high-energy theory

Enumerative geometry and modularity in two-modulus K3-fibered Calabi-Yau threefolds

This paper introduces a family of 39 non-toric two-modulus K3-fibered Calabi-Yau mirror pairs, derives uniform formulae for their topological free energies exhibiting modular properties under Fricke-extended congruence groups, and uses these results to compute and verify the modularity of Gopakumar-Vafa and Noether-Lefschetz invariants.

Charles Doran, Boris Pioline, Thorsten Schimannek2026-07-07

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