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๐Ÿ” vivek sarkar ๐Ÿ“‚ Physics
Showing 2546 results for "vivek sarkar" in Physics
Physics Preprint PDF DOI

Discrete Lattice Models for Interface Growth on a Complete Graph

J. M. Marcos, J. J. Melendez, R. Cuerno, J. J. Ruiz-Lorenzo ยท 2026

We investigate the behavior of discrete interface growth models belonging to the Edwards--Wilkinson (EW) and Kardar--Parisi--Zhang (KPZ) universality classes, when defined on a complete graph, a topolโ€ฆ

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Physics Preprint PDF DOI

Parker Solar Probe Observations of Compound Reconnection Exhaust Boundaries and Mirror-Mode Structures in the Near-Sun Heliospheric Current Sheet

Weijie Sun, Tai Phan, Jia Huang, Yi-Hsin Liu, James A. Slavin, Orlando Romeo, Mingzhe Liu, Vassilis Angelopoulos, Ali Rahmati, Davin Larson, Nehpreet Walia, Stuart Bale, Marc Pulupa, Jiutong Zhao, Roberto Livi ยท 2026

Magnetic reconnection is a fundamental physical process that can drive rapid conversion of magnetic energy into plasma bulk flows, thermal heating, and particle acceleration in space and astrophysicalโ€ฆ

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Learning Neural Operator Surrogates for the Black Hole Accretion Code

Matthias Nagele, Cedric Bos, Chester Tan, Christian M. Fromm, Ingo Scholtes, Karl Mannheim ยท 2026

General-relativistic magnetohydrodynamic (GR-MHD) simulations are essential for studying black hole accretion, relativistic jets, and magnetic reconnection, yet their computational cost severely limitโ€ฆ

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Restoration of Ensemble Equivalence by Quantum Fluctuations

Alessandro Campa, Andrea Trombettoni ยท 2026

We study the thermodynamic phase diagram of a one-dimensional quantum spin chain subjected to both mean-field and nearest-neighbor interactions, and to a transverse magnetic field $h$. The purpose is โ€ฆ

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Augmented reality system for visualising magnetic field topology and charged-particle trajectories in magnetic fusion plasmas

Akinobu Matsuyama ยท 2026

A cost-effective augmented reality (AR) system is presented for visualising three-dimensional magnetic field structures and charged-particle trajectories in magnetically confined fusion plasmas. The sโ€ฆ

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A Fully Quantum Algorithm for Image Edge Detection

Fred Sun ยท 2026

This work introduces a novel quantum algorithm for gradient-based edge detection that operates entirely within the quantum circuit model. Grayscale images are encoded using the Novel Enhanced Quantum โ€ฆ

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Radial evolution of Alfv\'en wave Parametric Decay Instability in the near-Sun solar wind: Effects of Temperature Anisotropy

Hayato Saguchi, Yohei Kawazura, Munehito Shoda, Yuto Katoh ยท 2026

Parametric decay instability (PDI) of Alfv\'en wave is thought to play an important role in the dissipation of the large-amplitude Alfv\'en waves and in the heating of magnetized plasmas. Temperature โ€ฆ

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A study of the spatial evolution of the Radcliffe wave in a sample of young open star clusters

Vadim V. Bobylev, Anisa T. Bajkova, Nazar R. Ikhsanov ยท 2026

A sample of 139 young open star clusters closely associated with the Radcliffe wave is considered. Modeling their spatial distribution and kinematics over a time interval of 30 Myrs ago and 30 Myrs inโ€ฆ

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Disentangling new physics with quantum entanglement in $t\bar{t}$ production at future lepton colliders

Masato Arai, Kentarou Mawatari, Nobuchika Okada ยท 2026

We investigate quantum entanglement and Bell-inequality violation in top-antitop pair production at future lepton colliders such as the International Linear Collider (ILC) and multi-TeV muon collidersโ€ฆ

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Polytropic stellar wind models with strongly localized heating

L. Westrich, B. Shergelashvili, H. Fichtner, V. N. Melnik ยท 2026

Polytropic models of stellar winds remain to be useful tools because they allow for a simple description of the energy balance of the expanding plasma without explicitly specifying potentially complexโ€ฆ

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Self-Interaction and Galactic Magnetic Field Bounds on Millicharged Magnetic Monopole Dark Matter

Michael L. Graesser, R. Andrew Gustafson ยท 2026

A dark matter sector composed of magnetic monopoles of a dark U(1) symmetry having a small kinetic mixing with the Standard Model photon has a rich and interesting phenomenology. The model in itself iโ€ฆ

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Percolation from Quantum Metric in Flat-Band Delocalization

Bo Yin, Zhijun Wang, Quansheng Wu ยท 2026

The quantum metric is a fundamental ingredient of band quantum geometry and has recently at tracted intense interest, with most of its transport signatures appearing in the intrinsic second order nonlโ€ฆ

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Magnetic switchback formation: a review of proposed mechanisms

Peter F. Wyper, Jonathan Squire, Etienne Pariat, Oleksiy V. Agapitov, Jim F. Drake, Norbert Magyar, William H. Matthaeus, Lorenzo Matteini, David Ruffolo, Victor Reville, Chen Shi, Munehito Shoda, Marc Swisdak, Marco Velli, Mojtaba Akhavan-Tafti, Bahaeddine Gannouni, Roberto Lionello, Maria S. Madjarska, Mathew J. Owens, Nour E. Rawafi, Alphonse C. Sterling, Durgesh Tripathi ยท 2026

Magnetic switchbacks are large amplitude deflections of the magnetic field within the solar wind. They are Alfv\'enic in character and so are associated with a spike in velocity and a generally small โ€ฆ

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Kardar-Parisi-Zhang physics in optically-confined continuous polariton condensates

Mikhail Misko, Natalia Starkova, Pavlos G. Lagoudakis ยท 2026

Kardar-Parisi-Zhang (KPZ) scaling has been observed in discrete polariton lattices, enabled by engineered band structures that stabilize the condensate. Whether this universality extends to intrinsicaโ€ฆ

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Shock properties for solar energetic particle events with signatures of inverse velocity arrival

A. Kouloumvakos, D. Lario, G. M. Mason, A. Vourlidas, R. C. Allen, N. Wijsen, X. Chen, Z. Ding, I. C. Jebaraj, P. Riley, D. J. McComas, C. M. S. Cohen, E. Paouris, S. Raptis, L. Rodriguez-Garcia, Z. G. Xu, G. D. Berland, G. C. Ho, D. G. Mitchell, E. C. Roelof, J. Rodriguez-Pacheco, M. E. Hill, R. F. Wimmer-Schweingruber ยท 2026

We present a detailed investigation of the shock properties associated with solar energetic particle (SEP) events that exhibit a concave (``nose-like'') shape in their energy spectrogram, characterizeโ€ฆ

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Robust quantum metrology using disordered probes

Vishnupriya K., Harikrishnan K. J., Amit Kumar Pal ยท 2026

Disorder is ubiquitous in quantum devices including quantum probes designed and fabricated for quantum parameter estimation and sensing. We investigate the robustness of a quantum probe against the prโ€ฆ

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Local topological markers for Chern insulators in ribbon geometry

Maks Repse, Tomaz Rejec, Jernej Mravlje ยท 2026

Local topological markers are used to characterize Chern insulators in the presence of spatial inhomogeneities, such as boundaries and disorder. In this paper, we study the local Chern marker in systeโ€ฆ

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High-Accuracy Numerical Solutions of Particle Motion in Static Magnetic Fields

Heather Jiles, Robert Weigel ยท 2026

The Parker-Sochacki (PS) method is investigated as an alternative to Runge-Kutta (RK) methods for solving the Lorentz equations of motion for a charged particle in a static magnetic field. Traditionalโ€ฆ

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Experimental Verification of a Universal Operator Growth Hypothesis

M. Engelsberg, Wilson Barros Jr ยท 2026

F$^{19}$ nuclear magnetic resonance free induction decay (FID) data are used to verify the predictions of a universal growth hypothesis for the Lanczos coefficients proposed by Parker et al. Our resulโ€ฆ

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Dimensional crossover in surface growth on rectangular substrates

Ismael S. S. Carrasco, Tiago J. Oliveira ยท 2026

In a recent work [Phys. Rev. E 109, L042102 (2024)], interesting dimensional crossovers [from two- to one-dimensional (2D to 1D) scaling] were found in the growth of Kardar-Parisi-Zhang (KPZ) interfacโ€ฆ

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