physics papers | Gist.Science

Defect Geometry and Concentration Controlled Excitonic Landscape in Monolayer MX 2 - family: A Systematic G 0 W 0 -BSE Study of Chalcogen Vacancies

This study combines systematic G₀W₀-BSE calculations with experimental measurements to reveal how chalcogen vacancy concentration and geometry in monolayer MoS₂, MoSe₂, and WSe₂ govern the formation and redistribution of distinct defect-induced excitonic states, thereby establishing a framework for engineering excitonic spectra for quantum technologies.

Shishir Timilsenaa, Sanju Gupta, Muhammad Idrees Bhatti, Nicholas Dimakis2026-07-14

🔬 physics

Temporal Slot Selection in an FRW Disformal Background under External Hubble-Constant Constraints

By applying external Hubble-constant constraints to a matched-complexity comparison of disformal FRW background models using Pantheon+, DESI, and cosmic-chronometer data, this study demonstrates that the temporal-only slot selection significantly outperforms the spatial-only branch by improving the data fit and maintaining better compatibility with external H0 calibration.

ATSUSHI OTSUKA2026-07-14

🔬 physics

Navigating Order-(Dis) Order Family Trees via Group-Subgroup Transitions

This paper introduces a symmetry-based framework called order-(dis)order family trees that utilizes group-subgroup relations to identify when predicted "novel" ordered crystal structures are actually derived from known disordered phases, thereby providing a critical tool for ensuring genuine novelty in high-throughput materials discovery.

Shuya Yamazaki, Yuyao Huang, Martin Hoffmann Petersen, Wei Nong, Kedar Hippalgaonkar2026-07-14

🔬 physics

Motion-Enhanced Gravity: A Phenomenological Study of Momentum-Curvature Couplings

This paper introduces Motion-Enhanced Gravity (MEG), a metric-affine vector–tensor extension of General Relativity that couples spacetime curvature to matter four-momentum flux, offering a mathematically consistent framework that potentially explains flat galactic rotation curves and late-time cosmic acceleration without dark matter while predicting observable deviations in gravitational waves and black hole shadows.

MD. Nur Uddin2026-07-14✓ Author reviewed ⓘ

🔬 physics

Reconsidering Einstein’s Derivation of Diffusion Equation to Provide Solutions Consistent with Nano-Scale and Multi-Scale Physics

This paper proposes a corrected diffusion equation derived by revisiting Einstein's original method to retain higher-order terms, thereby preserving fluid structure information and enabling accurate modeling of mass transport at nano-scales and in multi-scale systems.

Gregory Aranovich2026-07-14

🔬 physics

Compact single-shot wavefront sensing via k-space shifting in dual-layer metasurfaces

This paper introduces a dual-layer metasurface architecture that utilizes k-space shifting to break intrinsic symmetry and enable compact, single-shot quantitative phase imaging by resolving the polarity of phase gradients for high-fidelity wavefront reconstruction.

Nicholas Fang, Wenyu Chen, Zixin Zhao, Renji Zhou, Weijie Deng, Din Ping Tsai, Liang Gao, Jinlong Zhu2026-07-14

🔬 physics

Analysis of Heat Transfer Due to Steady Mhd Flow in a Porous Channel With Navier Slip and Convective Boundary

This paper presents an analytical investigation of steady magnetohydrodynamic flow and heat transfer in a porous channel with Navier slip and convective boundary conditions, deriving closed-form solutions to demonstrate how parameters such as the magnetic field, slip effects, and heat generation significantly influence velocity profiles, temperature distributions, and key engineering metrics like skin friction and the Nusselt number.

Taiwo S. Yusuf, Vampah T. Peter2026-07-14✓ Author reviewed ⓘ

🔬 physics

A Physics-Informed Neural Network Frameworkfor Elastodynamic Wave Propagation inBimaterial Systems

This study proposes a physics-informed neural network framework that accurately models transient elastodynamic wave propagation in bimaterial systems by embedding governing equations and boundary conditions into the learning process, serving as a robust and computationally efficient surrogate model validated against finite-element simulations for applications in high-rate solid mechanics.

Sonal Ankush Chibire, Jenn-Terng Gau, Bo Zhang2026-07-14

🔬 physics

AI-Driven Spatiotemporal Decoding of Counter-Propagating OAM States for Highly Resilient Physical-Layer Security

This paper proposes "OAM-NET," an AI-driven physical-layer security architecture that utilizes counter-propagating OAM states and a Bi-LSTM neural network to achieve highly resilient data decoding with 92.67% accuracy even under extreme noise conditions where the signal-to-noise ratio is approximately 0 dB.

Murtadha A. Sultan2026-07-14

🔬 physics

Self-oriented Seed Formation and Dynamic Annular-Gap Evolution During Sustained Long-length Entirely Detached Crystal Growth in the Vertical Directional Solidification (VDS)

This study demonstrates that sustained long-length entirely detached crystal growth of Sb-based semiconductors in a Vertical Directional Solidification (VDS) process is achieved through the formation of a self-oriented seed and the subsequent evolution of a dynamic annular gap, resulting in crystals with significantly enhanced structural perfection and reduced dislocation densities.

Dattatray Gadkari2026-07-14

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