3171 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.
This paper employs a 2-dimensional theory space analysis (- plane) to demonstrate that gravity models capable of exactly mimicking CDM expansion histories are prone to instability, while those accommodating phantom crossing scenarios inevitably suffer from tachyonic instability, all without requiring explicit functional reconstruction of the gravity theory.
This paper generalizes exponential random graph models by introducing pairwise link interactions to derive a closed-form renormalization group transformation for low-coordination networks, demonstrating the formal equivalence of induced disorder to time-reversed drift-diffusion and establishing the long-wavelength irrelevance of certain conditioning effects for applications in social, neural, and inference problems.
This paper employs a quantum field theory framework to derive oscillation probabilities for Dirac neutrinos in external matter and magnetic fields, overcoming specific formal challenges related to dressed propagators and right-handed neutrino observability while identifying small QFT corrections to standard quantum mechanical predictions.
This paper demonstrates that metastable cosmic strings arising in single-scale electroweak-like dark sectors can explain the stochastic gravitational-wave background observed by Pulsar Timing Arrays through the quantum decay of classically stable strings via monopole-antimonopole pair nucleation, a process validated by a thin-defect approximation across the phenomenologically favored parameter space.
This paper investigates whether superluminal photon propagation in the Drummond-Hathrell effective action violates causality in curved spacetime by applying global causal structure analysis and quantum-field-theoretic microcausality diagnostics, concluding that such propagation remains causally benign within the theory's regime of validity for specific gravitational backgrounds.
This paper refines estimates of energy released as "scalar tsunamis" when light scalar fields surrounding collapsing stars are liberated upon black hole formation, demonstrating that while the total energy remains comparable to flat-space predictions, general relativity and improved initial modeling significantly alter the resulting energy spectrum.
Using a unified Bayesian framework to analyze CMB, BAO, and supernova data, the study finds that updated processing and recent measurements largely resolve apparent tensions in the standard CDM model, concluding that claims necessitating a shift to evolving dark energy models are premature.
This paper demonstrates that a triangular Rydberg array can serve as an analog quantum simulator for (2+1)D U(1) lattice gauge theory, naturally realizing string roughening phenomena such as logarithmic width growth and the Lüscher correction, while also enabling the observation of real-time string fluctuations and breaking dynamics.
This paper proposes a model-independent formalism centered on a universal Cosmological Form Factor (CFF) that, driven by the principles of statistical isotropy and locality, unifies the description of diverse primordial stochastic gravitational wave background anisotropies through a single angular structure and multipole scaling.
This paper investigates the canonical quantization of scalar and Maxwell fields in anti-de Sitter spacetime, establishing conditions for vacuum stability by demonstrating that a non-negative Hamiltonian can be achieved either through specific coupling constraints or by introducing ghost states with anti-commutation relations, while also confirming that the resulting renormalized energy-momentum tensors yield a stable, maximally symmetric vacuum.