physics papers | Gist.Science

Vibrational Dynamics of Fixed-Free Mass-Spring Chains: Insights into Longitudinal Oscillations of Carbon Nanotubes (CNTs)

This study demonstrates that while the longitudinal vibrational displacement of carbon nanotubes remains linear and amplitude-independent under fixed-free conditions, the emergence of harmonics in axial force variance serves as an early indicator of nonlinearity, validating a combined displacement-force analysis for characterizing nanoscale dynamics and developing NEMS.

Ayouba BATOURE, Alio ISSOUFOU ARZIKA2026-08-04

🔬 physics

On the Flattening of the Inertial-Subrange Slope During the Afternoon Transition of the Convective Boundary Layer: A Spectral Turbulence Kinetic Energy Budget Analysis

This paper utilizes an advanced spectral turbulence kinetic energy budget model, incorporating anisotropic initial conditions, intermittent fractal cascades, and decomposed thermal forcing, to demonstrate that the flattening of the inertial-subrange slope during the afternoon transition of the convective boundary layer is caused by the progressive shut-off of distributed buoyant sources over a fixed intermittent cascade geometry rather than changes in cascade efficiency or anisotropy.

Antonio Goulart, Matheus Jatkoske Lazo, Julian Moises Sejje Suarez2026-08-04

🔬 physics

Vibrational spectroscopy identifies the bond asymmetry of hexagonal diamond

By combining first-principles lattice dynamics with Raman spectroscopy, this study resolves the structural controversy of bulk hexagonal diamond by identifying a small positive bond asymmetry where interlayer bonds are longer than intralayer bonds, a finding that contradicts previous refinements and suggests the 1,529 cm⁻¹ Raman feature does not originate from ideal 2H diamond.

Li Zhu2026-08-04

🔬 physics

Autoparametric Resonance and Fractional-Order Viscoelastic Damping in Cable-Stayed Bridges: A Multiple-Scales Analysis with Finite-Element Verification

This paper integrates fractional-order viscoelastic damping into a nonlinear autoparametric resonance model of cable-stayed bridges, deriving closed-form instability thresholds via the method of multiple scales and validating the theoretical predictions against both direct numerical integration and finite-element simulations.

Oluwatosin Gabriel Oyesanya2026-08-04

🔬 physics

A wall-based, interpretable reduced-order model for real-time estimation of near-wall turbulence

This paper presents a wall-based, interpretable reduced-order model derived from proper orthogonal decomposition and radial basis functions that successfully reconstructs the self-sustaining cycle of near-wall turbulence and tracks true flow trajectories using only sparse, noisy wall shear stress measurements.

Miguel Pérez Cuadrado, Giorgio Maria Cavallazzi, Andrea Nóvoa, Alfredo Pinelli2026-08-04

🔬 physics

Mechanical Visualization of FLRW-Type Expansion Kinematics in Hele-Shaw Compression Flow: Tracer Trajectories, Comoving Scalar Modes, and Anisotropic Cells

This paper establishes that orthogonally compressed Hele-Shaw flow serves as a precise macroscopic analog for FLRW-type expansion kinematics, demonstrating how gap history dictates Hubble-like radial velocities, tracer trajectories, scalar mode damping, and anisotropic cell deformation to define a viable experimental design window for cosmological simulations.

Rogelio Cepeda Guedea2026-08-04

🔬 physics

MAFA: Bio-Inspired Physics-Driven Activation Layers for Stateful In-Memory Computing

This paper introduces MAFA, a novel bio-inspired activation layer based on Landau-Khalatnikov ferroelectric phase transitions in PZT materials, which leverages intrinsic hysteresis and non-volatile memory to overcome energy constraints and the vanishing gradient problem in stateful in-memory neuromorphic computing.

Mohana Attia2026-08-04

🔬 physics

Experimental Realization of Outdoor-Unit-Free Reversible Phonon Cancellation and Stateless O(1) ACRL vQPU Architecture for Zero-Emission Climate Cooling

This paper claims to experimentally realize a revolutionary, zero-emission cooling system that eliminates outdoor units by using acoustic phonon phase cancellation and stateless logic to convert ambient heat into electricity with 94.7% efficiency, though the described physics (such as destructive interference of thermal noise and anti-gravity AI auditing) contradicts established thermodynamic laws and suggests the content is scientifically impossible.

Min Ho Jung2026-08-04

🔬 physics

Spacetime from a Confining Flux-Tube Network: Percolation, Renormalization-Group Flow, and Numerical Tests

This paper proposes and numerically validates a background-independent statistical model in which classical spacetime geometry and Einstein gravity emerge from the coarse-grained connectivity of a confining flux-tube network, demonstrating that renormalization-group flow to a fixed point induces an Einstein–Hilbert action and reproduces black-hole entropy via an area law.

Mohammad Hannan2026-08-04

🔬 physics

A simple and easy tabletop double slit experiment for assessing optical intensity distribution Pathways beyond Diffracting Obstacles

This paper presents a simple, low-cost tabletop double-slit experiment using a human hair and a smartphone camera that provides the first direct experimental visualization of structured optical intensity pathways in the immediate post-obstacle Fresnel region, confirming their physical nature and correlation with far-field interference patterns.

Naeem Ullah2026-08-04

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