physics papers | Gist.Science

Exact Localized Information Capacity of a Local Observable in a Hilbert-Space-Shattered System

This paper establishes a rigorous, closed-form expression for the exact localized information capacity of local observables in Hilbert-space-shattered systems, demonstrating that this capacity is determined by the projection onto the exact commutant algebra and yields specific, non-universal bit densities (such as $\sim 1.09$ bits/site for the dipole-conserving chain and $2/3$ bit/site for the $t$ - $J_z$ chain) that explain why complete memory in these systems arises from statistically localized data rather than strictly local integrals of motion.

Hikaru Wakaura, Taiki Tanimae2026-07-16

🔬 physics

Measurements of the level of radiation dose that exposed towards our community at Chagni Town using Geiger-Muller counter

This study utilizes a Geiger-Muller counter to measure background radiation levels in Chagni Town, revealing significant spatial variations across specific locations and a higher average count during the summer season compared to winter, attributed to natural radionuclides like radon and artificial isotopes such as krypton-85.

Asmamaw Tsega, Yenesew Asradew, Habtamu Dagnaw, Eleni Binalfew, Melak Birara2026-07-16

🔬 physics

Ising Dirac fermions across a topological phase transition

This study reports the emergence of six-fold degenerate Dirac fermions in twisted WSe₂ moiré systems across a quantum spin Hall transition, demonstrating a new route to realizing Dirac physics in strongly spin–orbit-coupled materials and establishing a platform for high-mobility spintronics.

Kaifei Kang, Aoqian Zhang, Yaqi Ma, Yifei Jin, Nan Zhang, Wentao Jiang, Tianyu Qiao, Ivana Wong, Ulf Lampe, Kenji Watana (…)2026-07-15

🔬 physics

Evaluation of tortuosity based on an experimental study of a solute diffusion in a porous medium

This paper presents experimental findings on the diffusion tortuosity of a porous medium modeled by monosized hard spheres, demonstrating how variations in porosity and skeleton shape influence tortuosity values ranging from 1.20 to 1.46 and comparing these results with theoretical predictions and existing literature.

Denis Polezhaev, Anastasia Teryokhina2026-07-15

🔬 physics

Modeling and Experimental Comparison of Tungsten Impurity Profiles for rotating plasmas in KSTAR

This study validates an ad-hoc 2-D model that couples short-time parallel dynamics with long-time radial transport to accurately predict tungsten impurity profiles and radiation distributions in high-rotation KSTAR plasmas, demonstrating reasonable agreement with experimental infrared video bolometer measurements.

Hyojong Lee, E. A. Belli, J. Candy, D Fajardo, Jekil Lee, Jungpyo Lee2026-07-15

🔬 physics

Noise suppression via pulsed all-optical magnetometry with nitrogen-vacancy ensembles

This paper introduces a pulsed all-optical protocol using nitrogen-vacancy ensembles in diamond that suppresses common-mode optical noise to achieve a 10-fold improvement in low-frequency sensitivity over continuous-wave techniques, while also characterizing the dependence of contrast on readout timing and dark time for optimizing diverse NV-diamond samples.

Xiechen Zheng, Jeyson Támara-Isaza, John Blanchard, Ronald Walsworth2026-07-15

🔬 physics

Propagation of perfect optical vortex beams in a misaligned optical system

This paper derives an analytical expression for the propagation of perfect optical vortex beams through misaligned optical systems, revealing that misalignment transforms single-ring vortices into controllable multi-ring Bessel-Gauss beams at the focal plane, with specific structural characteristics dependent on topological charge and geometric ratios, before eventually reverting to a single-ring profile over longer distances.

Bikash Kumar Das, Camilo Granados, Wenlong Gao, Stephan Fritzsche2026-07-15

🔬 physics

Long-lived Electronic Coherence Transfer in Platinum(II) Molecular Assemblies Revealed by Two-Dimensional Electronic Spectroscopy

Using two-dimensional electronic spectroscopy, researchers discovered that a platinum(II) molecular thin film exhibits long-lived electronic coherence transfer from singlet to triplet states persisting up to 680 fs at room temperature, offering new avenues for coherent control in optoelectronic and quantum technologies.

Yu-Chen Wei, Chih-Hsuan Lu, Chun‐Hao Li, Bo-Han Chen, Kai Chen, Pi-Tai Chou, Shang-Da Yang2026-07-15

🔬 physics

15 mK-Level Accuracy in All-Optical NV Diamond Thermometry via Interpretable Deep Learning

This study demonstrates that a 6-layer deep neural network achieves 15 mK-level accuracy in all-optical NV diamond thermometry, significantly outperforming traditional regression models, while introducing an "explainable modes of deviation" (xMoDs) framework to spectroscopically interpret the model's decision-making processes.

Shraddha Rajpal, Zeeshan Ahmed, Tyrus Berry2026-07-15

🔬 physics

Self-Soldering Enables Binder-Free 3D-Printed Thermoelectrics

This paper presents a scalable, binder-free 3D printing strategy for thermoelectric devices that utilizes kinetically controlled non-equilibrium powders to enable intrinsic self-soldering, achieving ingot-level performance and high power density while eliminating costly extrinsic binders.

Shengduo Xu, Pingping Qian, Yi Wen, Hongyao Xie, Kaiyi Luo, Chen Wang, Xinyuan Tang, Lei Yang, Qiang Sun, Ying Liu, Li-D (…)2026-07-15

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