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๐Ÿ” karan sapra ๐Ÿ“‚ Physics
Showing 844 results for "karan sapra" in Physics
Physics Preprint PDF DOI

Revisiting the mixing length scaling in pressure-gradient turbulent boundary layers via a symmetry approach

Weitao Bi ยท 2026

A century after Prandtl's mixing length hypothesis, full-profile scaling of the mixing length in pressure-gradient turbulent boundary layers (PG TBLs) remains debated, especially for adverse pressure โ€ฆ

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Quantitative Evaluation of Forward and Backward Scattering in Isotropic Turbulence via H\"anggi--Klimontovich and It\^o Stochastic Processes

Nicola de Divitiis ยท 2026

This work evaluates the magnitude of the turbulent energy cascade in terms of forward and backward scattering by modeling the "stretch and fold" mechanism through a drift-free Hanggi-Klimontovich stocโ€ฆ

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Vortex structures in electron-positron pair production by two-colored fields

Adiljan Sawut, Ying-Jun Li, Hong-Hao Fan, Bai-Song Xie ยท 2026

We investigate the spin resolved vortex properties of electron positron pairs created from vacuum in time delayed, two color electromagnetic fields. By treating the temporal delay G as a continuous tuโ€ฆ

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Emulator-Assisted Nuclear DFT Inference and Its Consequences for the Structure of Neutron Stars

Pietro Klausner, Marco Antonelli, Gianluca Colo, Francesca Gulminelli, Xavier Roca-Maza, Enrico Vigezzi ยท 2026

Nuclear density functional theory provides a unified description of finite nuclei and bulk nuclear matter, and is widely used to model the neutron star equation of state. However, extrapolations to suโ€ฆ

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Physics Preprint PDF DOI

Optimization-Based Discovery of A Non-Attracting Flow State in An Oscillating-Cylinder Wake

Daiwei Dong, Wenbo Cao, Wei Suo, Jiaqing Kou, Weiwei Zhang ยท 2026

In the flow past a stationary circular cylinder, the classical Karman vortex street arises from a Hopf bifurcation of the steady flow at the critical Reynolds number. Although this solution becomes dyโ€ฆ

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Physics Preprint PDF DOI

Direct numerical simulation of out-scale-actuated spanwise wall oscillation in turbulent boundary layers

Jizhong Zhang, Fazle Hussain, Jie Yao ยท 2026

Spanwise wall oscillation (SWO) of turbulent boundary layers (TBLs) is investigated via direct numerical simulations over an extended actuation region with oscillation periods up to T_{sc}^+=600, scalโ€ฆ

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Physics Preprint PDF DOI

On-chip Parametric Amplification in a Double Quantum Dots Circuit

Yong-Qiang Xu, Rui Wu, Si-Si Gu, Shun-Li Jiang, Shu-Kun Ye, Bao-Chuan Wang, Hai-Ou Li, Guang-Can Guo, Chang-Ling Zou, Gang Cao, Guo-Ping Guo ยท 2026

In microwave-based quantum circuits, including double quantum dots (DQDs), superconducting qubits and spin qubits, parametric amplifiers are indispensable in achieving high-fidelity qubit readouts. Deโ€ฆ

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Physics Preprint PDF DOI

How well known is the compressibility of nuclear matter?

J. Margueron, E. Khan ยท 2026

The most accurate approach to determine the compressibility of nuclear matter remains the one based on microscopic Energy Density Functionals (EDFs). Recent analyses yield a value for nuclear incompreโ€ฆ

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Reduced Thermodynamic-Topological Observables for Multiscale Dissipative Systems. A fusion-relevant shell-model study of detection, design screening, and conservative operation

Andrea Caffagni ยท 2026

We introduce a reduced set of thermodynamic-topological observables for ordered multiscale dissipative systems. An interface-local quadratic reduction produces bounded integrity and residual channels,โ€ฆ

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From Bifurcations to State-Variable Statistics in Isotropic Turbulence: Internal Structure, Intermittency, and Kolmogorov Scaling via Non-Observable Quasi-PDFs

Nicola de Divitiis ยท 2026

This article investigates the intrinsic link between skewness and statistical intermittency in velocity and temperature increments within homogeneous isotropic turbulence. The theoretical framework buโ€ฆ

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A geometric physics-informed machine learning inference for the neutron star maximum mass and the inverse problem

Rounak Mukherjee, Ritam Mallick ยท 2026

The existence of a distinct mass boundary between the heaviest neutron stars and the lightest black holes remains in question. It is an artefact of our ignorance of the properties of matter at supra-nโ€ฆ

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Electroactive morphing effects on the aerodynamic performance through wobulation around an A320 wing with vibrating trailing edge at high Reynolds number

C. Rouaix (IMFT, UOIT = Ontario Tech University), C. Jimenez-Navarro (IMFT), M. Carvalho, C. Raibaudo (UO, PRISME), J. Abou-Khalil (IMFT, LAPLACE), A. Marouf (IMFT), Y. Hoarau (ICube), G. Harran (IMFT), J.C.R. Hunt, H. Hangan (UOIT = Ontario Tech University), J.F. Rouchon (LAPLACE), M. Braza (IMFT) ยท 2026

This study aims to investigate the effects of electroactive morphing on a 70cm chord A320 wing by means of near trailing edge slight deformation and vibration. Wing morphing is performed by Macro Fibeโ€ฆ

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Investigation of Wake Dynamics of a Slender Symmetric Trailing Edge Hydrofoil

Gabriele Gaiti, Chirag Trivedi, Kristian F. Sagmo ยท 2026

Accurate prediction of wake dynamics behind hydrofoils is critical for mitigating vortex-induced vibrations and improving the performance of hydraulic machinery. Conventional turbulence modeling approโ€ฆ

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Effects of the centrality determination method for the equation of state and nucleonic observables from Au+Au collisions at $\sqrt{s_{NN}}$ = 2.4 GeV

Xiaoqing Yue, Pengcheng Li, Yongjia Wang, Qingfeng Li, Fuhu Liu ยท 2026

Centrality determination remains one of the major sources of systematic uncertainty in intermediate-energy heavy-ion collision analyses, especially for probing the nuclear equation of state (EoS) at sโ€ฆ

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Autonomous Materials Exploration by Integrating Automated Phase Identification and AI-Assisted Human Reasoning

Ming-Chiang Chang, Maximilian Amsler, Duncan R. Sutherland, Sebastian Ament, Katie R. Gann, Lan Zhou, Louisa M. Smieska, Arthur R. Woll, John M. Gregoire, Carla P. Gomes, R. Bruce van Dover, Michael O. Thompson ยท 2026

Autonomous experimentation holds the potential to accelerate materials development by combining artificial intelligence (AI) with modular robotic platforms to explore extensive combinatorial chemical โ€ฆ

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Learning the relations between neutron star and nuclear matter properties with symbolic regression

N. K. Patra, Tuhin Malik, Kai Zhou, Constanca Providencia ยท 2026

The equation of state (EOS) of dense matter in neutron stars (NSs) remains uncertain, particularly at supra-nuclear densities where complex nuclear interactions and the potential presence of exotic maโ€ฆ

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Temporal Bragg Gratings: Broadband Reconfigurable Parametric Amplifiers

Sajjad Taravati ยท 2025

This paper introduces temporal Bragg gratings as a new class of broadband, reconfigurable parametric amplifiers. We present a comprehensive investigation of power amplification in temporal Bragg gratiโ€ฆ

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Magnetically confined charged particles: From steep density profiles to the breaking of the adiabatic invariant

Aurelien Cordonnier (CPT), Yohann Lebouazda (CPT), Xavier Leoncini (CPT), Guilhem Dif-Pradalier (IRFM) ยท 2025

This study examines the stability of Vlasov equilibrium solutions for magnetically confined plasmas, derived through the principle of maximum entropy. By treating the toroidal limit as a perturbation โ€ฆ

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Height and Energy Evolution of X-ray Double Sources in a Solar Flare

Hanya Pan, Astrid M. Veronig, Rui Liu ยท 2025

In the standard model, magnetic reconnection at a vertical current sheet above the flare arcade is key to explaining many aspects of solar eruptions. The supra-arcade region is where the vertical currโ€ฆ

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Exact nuclear pairing solution for large-scale configurations: I. The EP (v1.0) program at zero temperature

Tran Quoc Viet, Le Tan Phuc, Tran Vu Dong, Nguyen Ngoc Anh, Nguyen Quang Hung ยท 2025

In this work, we present the ``EP code" (version 1.0), a user-friendly and robust computational tool. It computes the exact pairing eigenvalues and eigenvectors directly from the general nuclear pairiโ€ฆ

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