International Journal of Physics

International Journal of Physics | Vol. 17, No. 6, June 2026 | pp. 41–48

DOI: 10.46882/2026/IJP/000194

Research Article

Title: Quantum Entanglement Kinetics and Decoherence Suppressions in Coupled Six-Level Quantum Dot Lattices

Names of Authors: S. H. Zhang¹, J. W. Park²

Authors’ Affiliations:
¹ Department of Physics, Tsinghua University, Beijing, China
² Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, South Korea

Abstract: Defending non-classical quantum state correlations from environmental phase relaxation pathways is a vital hurdle for constructing reliable solid-state quantum memory registers and scalable quantum computing networks. This paper investigates the time-dependent kinetic evolution of quantum entanglement and presents active decoherence suppression strategies within coupled six-level semiconductor quantum dot lattices. The architecture models an array coupled to a customized optical microcavity and interacting with a discrete thermal acoustic phonon bath. We solved the density matrix master equations using an algebraic operator framework matching the Lindblad dissipation rules at a cryogenic operating temperature of 4.2 K. The calculations demonstrate that configuring the laser fields under multi-channel quantum interference conditions effectively decouples the electronic states from radiative cavity mirror paths. This isolation sustains stable bipartite entanglement across continuous runtime blocks exceeding 22.0 ns, preserving a concurrence index above 0.86. We simulated a periodic dynamical pulse sequence that dampens low-frequency charge noise channels. This optimization yields a target quantum gate fidelity calculation of 99.4% ± 0.2%, assisting solid-state design.

Keywords: Quantum entanglement; quantum dots; Lindblad master equation; dynamical decoupling; quantum optics; quantum computing

Manuscript Timeline: Received: March 02, 2026; Revised: April 14, 2026; Accepted: May 02, 2026; Published: June 18, 2026

Citation: Zhang, S. H., & Park, J. W. (2026). Quantum Entanglement Kinetics and Decoherence Suppressions in Coupled Six-Level Quantum Dot Lattices. International Journal of Physics, 17(6), 41–48.

International Journal of Physics | Vol. 17, No. 5, May 2026 | pp. 33–40

DOI: 10.46882/2026/IJP/000193

Research Article

Title: Superconducting Phase Transitions and Magnetic Flux Dynamics in Niobium-Boron Thin Films

Names of Authors: O. K. Semenov¹, Y. S. Kim²

Authors’ Affiliations:
¹ Institute for Solid State Physics, Russian Academy of Sciences, Moscow, Russia
² Department of Physics and Astronomy, Seoul National University, Seoul, South Korea

Abstract: Stabilizing the magnetic vortex lattice and maximizing the critical current capacity of superconducting layers under strong applied magnetic fields are vital for engineering single-photon sensors and high-field laboratory magnets. This study evaluates the superconducting phase transitions and maps magnetic flux pinning configurations in niobium-boron (Nb-B) thin films. The thin films were prepared via magnetron sputtering on sapphire substrates with thickness parameters ranging from 50.0 nm to 300.0 nm. We conducted low-temperature electrical transport and magnetometry profiles across a temperature grid from 1.5 K to 15.0 K under magnetic fields up to 10.0 T. The pristine 300.0 nm film displayed a sharp superconducting transition with a critical temperature (Tc) of 11.2 K at zero field. Magnetization loops revealed a high critical current density (Jc) exceeding 4.2 x 10^6 A/cm² at 4.2 K. Analysis of the pinning force density indicates that introducing nanoscale boron inclusions triggers an intensive vortex-locking matching effect. The upper critical field, Hc2(0), was estimated to be 14.5 T using the Werthamer-Helfand-Hohenberg model, proving that grain boundary control improves layer performance.

Keywords: Superconductivity; thin films; flux pinning; critical current density; upper critical field; magnetron sputtering

Manuscript Timeline: Received: February 11, 2026; Revised: March 24, 2026; Accepted: April 10, 2026; Published: May 15, 2026

Citation: Semenov, O. K., & Kim, Y. S. (2026). Superconducting Phase Transitions and Magnetic Flux Dynamics in Niobium-Boron Thin Films. International Journal of Physics, 17(5), 33–40.

International Journal of Physics | Vol. 17, No. 4, April 2026 | pp. 25–32

DOI: 10.46882/2026/IJP/000192

Research Article

Title: Thermal Dispersion Metrics and Phonon Wavepacket Scattering at Silicon-Germanide Core-Shell Nanowire Interfaces

Names of Authors: M. G. Richter¹, D. W. Meyer²

Authors’ Affiliations:
¹ Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany
² Institute of Physics, Karlsruher Institut für Technologie, Karlsruhe, Germany

Abstract: Restricting cross-interface thermal transport across mismatched semiconductor boundaries is a primary technical challenge when engineering next-generation high-efficiency thermoelectric harvesters and protecting microcircuit nodes from hotspot deterioration. This paper uses molecular dynamics simulations to quantify thermal dispersion metrics and track phonon wavepacket scattering at defective silicon-germanide (Si-Mg2Ge) core-shell nanowire boundaries. We constructed atomistic structural configurations using the optimized Stillinger-Weber empirical potentials, incorporating varying concentrations of interfacial point defects and shell thickness variations. Longitudinal and transverse acoustic phonon wavepackets were launched with narrow frequency spreads centered between 2.0 THz and 8.0 THz. The computational data demonstrate that high-frequency acoustic phonons (f greater than 5.2 THz) undergo strong diffuse scattering at the rough interface, dropping the calculated transmission coefficient from 0.84 down to 0.20. This transport degradation is driven by localized strain fields and interface-bound vibrational modes. The overall interfacial thermal conductance decreased by 50.0% when the interface roughness parameter scaled from 0.1 nm to 0.6 nm at 300.0 K, revealing structural constraints for nanoscale device design.

Keywords: Thermal dispersion; phonon wavepacket; molecular dynamics; core-shell nanowires; thermoelectric cooling; germanide interfaces

Manuscript Timeline: Received: January 08, 2026; Revised: February 17, 2026; Accepted: March 09, 2026; Published: April 10, 2026

Citation: Richter, M. G., & Meyer, D. W. (2026). Thermal Dispersion Metrics and Phonon Wavepacket Scattering at Silicon-Germanide Core-Shell Nanowire Interfaces. International Journal of Physics, 17(4), 25–32.

International Journal of Physics | Vol. 17, No. 3, March 2026 | pp. 17–24

DOI: 10.46882/2026/IJP/000191

Research Article

Title: Relativistic Hydrodynamic Simulations of Particle Generation Cascades in Asymmetric Krypton-Gold Collisions

Names of Authors: H. L. Mueller¹, S. C. O’Brien²

Authors’ Affiliations:
¹ Institut für Kernphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
² School of Physics, University College Dublin, Dublin, Ireland

Abstract: High-energy asymmetric heavy-ion collisions provide a vital experimental testing ground for decoupling localized cold nuclear matter parameters from collective hot quark-gluon plasma behaviors in intermediate configurations. This study presents a relativistic hydrodynamic modeling framework to simulate particle production cascades during asymmetric krypton-gold (Kr-Au) collisions at a center-of-mass energy of 200.0 GeV per nucleon pair. We utilized a 3+1 dimensional viscous hydrodynamic code coupled with a statistical hadronization module to compute transverse momentum spectra and azimuthal anisotropy coefficients. The initial energy density distributions were generated via a Glauber-Gribov color-fluctuation model to track localized sub-nucleon scale features. The numerical simulations show that expanding fireballs develop a substantial radial flow profile, shifting the mean transverse momentum of protons up to 1.42 GeV/c in central runs. The calculated elliptic flow coefficient (v²) displays a strong mass-ordering signature, which matches experimental measurements gathered by specialized forward tracking spectrometers within a tight ±6.0% margin. This close agreement implies that small-scale systems can achieve brief collective hydrodynamic expansion.

Keywords: Relativistic hydrodynamics; particle production; krypton-gold collisions; elliptic flow; color-fluctuation model; statistical hadronization

Manuscript Timeline: Received: December 14, 2025; Revised: January 20, 2026; Accepted: February 08, 2026; Published: March 11, 2026

Citation: Mueller, H. L., & O’Brien, S. C. (2026). Relativistic Hydrodynamic Simulations of Particle Generation Cascades in Asymmetric Krypton-Gold Collisions. International Journal of Physics, 17(3), 17–24.

International Journal of Physics | Vol. 17, No. 2, February 2026 | pp. 9–16

DOI: 10.46882/2026/IJP/000190

Research Article

Title: Kinetic Simulation of Electron Drift Mechanics and Radical Yields in Fluoromethane Discharges

Names of Authors: A. M. El-Chemali¹, S. H. Zhang²

Authors’ Affiliations:
¹ Department of Physics, Faculty of Science, Lebanese University, Beirut, Lebanon
² Department of Physics, Tsinghua University, Beijing, China

Abstract: Fluoromethane (CH3F) gas discharges are widely utilized across the microelectronics manufacturing industries for precision dielectric oxide etching, chamber surface passivation, and thin-film texturing. This study develops a self-consistent kinetic simulation model to analyze electron drift mechanics and compute radical generation rates in low-pressure CH3F discharges. We solved the electron Boltzmann equation using a multi-term spherical harmonic expansion framework across an expansive reduced electric field range (E/N) spanning 10.0 Td to 600.0 Td. The model incorporates comprehensive cross-section sets detailing elastic collision momentum transfers, vibrational pumping thresholds, dissociative attachment, and electron-impact ionization tracks. Our calculations demonstrate that adding helium diluents (from 20.0% to 70.0% by volume) significantly distorts the high-energy tail of the electron energy distribution function. At a field strength of E/N = 60.0 Td, the total CH2F radical production rate coefficient scales up by an order of magnitude due to enhanced electron mean energies. The calculated electron drift velocities match independent swarm experimental tracks within a tight ±4.5% variance index, providing vital baseline constants for optimization.

Keywords: Fluoromethane; Boltzmann equation; electron transport; plasma kinetics; cross-section; dielectric etching

Manuscript Timeline: Received: November 02, 2025; Revised: December 18, 2025; Accepted: January 11, 2026; Published: February 13, 2026

Citation: El-Chemali, A. M., & Zhang, S. H. (2026). Kinetic Simulation of Electron Drift Mechanics and Radical Yields in Fluoromethane Discharges. International Journal of Physics, 17(2), 9–16.

International Journal of Physics | Vol. 17, No. 1, January 2026 | pp. 1–8

DOI: 10.46882/2026/IJP/000189

Research Article

Title: High-Pressure Mechanical Attributes and Elastic Anisotropy Indices of Ultra-Incompressible Hafnium Tetraboride

Names of Authors: V. I. Morozov¹, I. R. Sokolov²

Authors’ Affiliations:
¹ Institute of High Pressure Physics, Russian Academy of Sciences, Troitsk, Russia
² Kapitza Institute for Physical Problems, Russian Academy of Sciences, Moscow, Russia

Abstract: Synthesizing ultra-hard, incompressible refractory configurations capable of resisting intense mechanical shearing and structural deformation under high stress is essential for advancing ballistic shielding and aerospace industrial tooling. This paper examines high-pressure mechanical attributes and quantifies elastic anisotropy indices in orthorhombic hafnium tetraboride (HfB4) up to hydrostatic loads of 150.0 GPa. We performed first-principles density functional theory computations incorporating generalized gradient approximations across systematically compressed lattice grids. At zero pressure, the calculated bulk modulus is B0 = 286.0 GPa, with an elastic pressure derivative coefficient of B0' = 4.14, matching experimental diamond anvil cell recordings within a tight 1.2% margin. The single-crystal elastic constants (C11, C22, C33, C44, C55, and C66) climb monotonically under compression, strictly satisfying all Born mechanical stability parameters across the complete pressure range. The directional compressibility curves reveal that the crystal c-axis displays exceptional stiffness due to short, covalent hafnium-boron bonds interlocking the structural rows. Electronic band-structure maps verify a high density of states at the Fermi boundary, indicating that HfB4 retains its metallic character under high stress.

Keywords: Hafnium tetraboride; density functional theory; elastic constants; high pressure; mechanical stability; directional compressibility

Manuscript Timeline: Received: October 12, 2025; Revised: November 24, 2025; Accepted: December 15, 2025; Published: January 15, 2026

Citation: Morozov, V. I., & Sokolov, I. R. (2026). High-Pressure Mechanical Attributes and Elastic Anisotropy Indices of Ultra-Incompressible Hafnium Tetraboride. International Journal of Physics, 17(1), 1–8.