🔬 physics

A First-Principles Study of Hydrostatic Pressure-Driven Semiconductor-to-Semimetal Transitions, Dynamic Stability, Thermodynamic and Optical Properties in phases (α and γ) of 2D SnTe Monolayer and Bilayer structure

This first-principles study reveals that hydrostatic pressure drives semiconductor-to-topological-nodal-line-semimetal transitions in α\alpha- and γ\gamma-phase SnTe monolayers and bilayers, with bilayers exhibiting significantly lower critical pressures and enhanced dynamical stability due to interlayer coupling, thereby establishing these 2D structures as versatile platforms for tunable quantum and optoelectronic devices.

Md. Saiful Islam, Hasibul Hassan Rizvee, Budrun Neher, Farid Ahmed2026-07-15
🔬 physics

Recovering the Standard Model Gauge Group from Loop Quantum Gravity: A Unified Relative-Entropy, Flux-Gauge Network, and Geometric-Engineering Construction

This paper presents a unified construction demonstrating how the Standard Model gauge group emerges from Loop Quantum Gravity by integrating a monotone relative-entropy renormalization group, a flux-gauge network model, and geometric engineering to derive the SU(5) breaking to SU(3)×SU(2)×U(1) via a vertex-Higgs mechanism, while rigorously proving key group-theoretic results and reporting numerical validations of the underlying coarse-graining dynamics.

Mohammad Hannan2026-07-15
🔬 physics

Pervasive intervalley coherence in rhombohedral pentalayer graphene

Using scanning tunnelling microscopy, researchers demonstrate that intervalley coherence in rhombohedral pentalayer graphene is a pervasive, tunable instability that persists across a broad range of carrier densities and displacement fields, coexisting and competing with other correlated electronic states.

Shiyong Wang, Zonglin Li, Shudan Jiang, Min Li, Fo-Hong Wang, Yu Gu, Kai Liu, Yining Ren, Liang Liu, Dandan Guan, Yaoyi (…)2026-07-14
🔬 physics

Geometry-Controlled Plasmonic Localization and Graphene-Assisted Thermal Redistribution in Hybrid Gold–Graphene Nanocylinder Arrays

This study demonstrates that integrating a graphene layer with gold nanocylinder arrays enables simultaneous optical enhancement through aspect-ratio-controlled plasmonic localization and thermal stabilization via graphene's superior lateral heat diffusion, effectively reducing temperature non-uniformity by over 92% while preserving strong plasmonic effects.

Mohammad Sadegh Akhoundi Khezrabad, Samira Zolfaghari Nikanjam2026-07-14