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Showing 839 results for "vikrant varma" in Physics · Preprint
Physics Preprint PDF DOI

Floquet mobility edges and transport in a periodically driven generalized Aubry-Andr\'e model

Jayashis Das, Vatsana Tiwari, Manish Kumar, Auditya Sharma · 2026

We investigate the effect of a periodic electric field drive on the generalized Aubry-Andr\'e model, also known as the Ganeshan-Pixley-Das Sarma (GPD) model, which is well known as a host of mobility …

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Twisted traces and quantization of moduli stacks of 3d $\mathcal{N}=4$ Chern-Simons-matter theories

Leonardo Santilli · 2026

We conjecture, and show in a plethora of examples, that the sphere partition function of 3d $\mathcal{N}=4$ Chern-Simons-matter theories equals a sum of twisted traces on tensor products of Verma modu…

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Dimensional crossover in surface growth on rectangular substrates

Ismael S. S. Carrasco, Tiago J. Oliveira · 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) interfac…

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Countershading coloration in blue shark skin emerges from hierarchically organized and spatially tuned photonic architectures inside skin denticles

Viktoriia Kamska, Emeline Raguin, Bodo D. Wilts, Luca Bertinetti, Chiara Micheletti, Clemens Schmitt, Shahrouz Amini, Maria Murace, Frederik H. Mollen, Michael Blumer, Maite Erauskin Extramiana, Ruien Hu, Stefan Redl, Mason N. Dean · 2026

The blue shark (Prionace glauca) exhibits a striking dorsoventral color gradient, transitioning from vibrant blue dorsally to silver and white ventrally, a pattern widely interpreted as pelagic counte…

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Variability Study and Searching for QPOs with day-like periods in the blazar S5 0716+714 with TESS

Shubham Kishore, Alok C. Gupta, Paul J. Wiita · 2026

Using an unprecedented cadence of 30 minutes provided by the Transiting Exoplanet Survey Satellite (TESS), we have examined the optical light curves (LCs) of the blazar S5 0716+714 obtained from its S…

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ZTF Monitoring of $\gamma-$ray emitting Narrow Line Seyfert 1 Galaxies

Aman Kumar, Suvas Chandra Chaudhary, Raj Prince, Brian van Soelen, I.P. van der Westhuizen · 2026

The $\gamma$-ray-emitting narrow-line Seyfert-I ($\gamma$-NLSy1) are among the most interesting systems for studying disk-jet coupling. The soft X-ray properties of these systems suggest the presence …

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Efficient time-series prediction on NISQ devices via time-delayed quantum extreme learning machine

Mio Kawanabe, Saud Cindrak, Kathy Luedge, Jun-ichi Shirakashi, Tetsuo Shibuya, Hiroshi Imai · 2026

We proposed a time-delayed quantum extreme learning machine (TD-QELM) for efficient time-series prediction on noisy intermediate-scale quantum (NISQ) devices. By encoding multiple past inputs simultan…

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A Programmable Linear Optical Quantum Reservoir with Measurement Feedback for Time Series Analysis

Cag{i}n Ekici · 2026

Feedback-driven quantum reservoir computing has so far been studied primarily in gate-based architectures, motivating alternative scalable, hardware-friendly physical platforms. Here we investigate a …

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Thermodynamic modes of a quasiperiodic mobility-edge system in a quantum Otto cycle

Ao Zhou, Shujie Cheng, Gao Xianlong · 2026

We investigate thermodynamic operation of a quasiperiodic lattice with an exact mobility edge, described by the Biddle--Das Sarma model. We use this model as the working medium of a quantum Otto cycle…

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Topological photonics in one-dimensional settings

Shiqi Xia, Ziteng Wang, Domenico Bongiovanni, Dario Jukic, Daohong Song, Liqin Tang, Jingjun Xu, Roberto Morandotti, Hrvoje Buljan, Zhigang Chen · 2026

Over the past decade, topological photonics has emerged as a vibrant field, attracting significant attention and witnessing remarkable advancements. This growth can be attributed to its fundamental ap…

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On the Integrable Structure of the SU(2) Wess-Zumino-Novikov-Witten Model

Sylvain Lacroix, Adrien Molines · 2026

This paper is devoted to the quantum integrable structure of Wess-Zumino-Novikov-Witten models, formed by an infinite number of commuting Integrals of Motion (IMs) in their current algebra. Focusing f…

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Mass density structuring around galaxy formation sites: impact on galaxy basic properties

Sandra Robles, Rosa Dominguez-Tenreiro, Susana E. Pedrosa · 2026

We study the local evolution of the Universe around galaxy formation sites in the EAGLE50 large-volume reference simulation. Using the reduced inertia tensor (r-TOI), we followed the anisotropic evolu…

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Degeneration limits of Virasoro vertex operators and Painlev\'e tau functions

Hajime Nagoya, Haruki Nakagawa · 2026

We construct degeneration limits of vertex operators for the Virasoro algebra. Our method relies on the rearranged expansion of compositions of vertex operators together with their integral representa…

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HST+IGRINS synergy to characterise the newly discovered metal-rich bulge globular cluster Patchick 126

Elisa R. Garro, Davide Massari, Jose G. Fernandez-Trincado, Edoardo Ceccarelli, Chris Sneden, Fernando Aguado-Agelet, Melike Afsar, Michele Bellazzini, Rafael Guerco, Dante Minniti, Mattia Libralato, Beatriz Barbuy, Bruno Dias · 2026

We present the first comprehensive spectroscopic and deep photometric study of the globular cluster (GC) candidate Patchick~126. The spectroscopic analysis is based on high-resolution near-infrared da…

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Understanding Solar Flares and Energetic Events: Open questions, observational requirements, and instrumental needs over the coming decade

Malcolm K. Druett, Graham S. Kerr, Joel C. Allred, Philippa K. Browning, Giulio Del Zanna, Jaroslav Dudik, Robertus Erdelyi, Andrzej Fludra, David R. Graham, Hamish A. S. Reid, Laura A. Hayes, Sarah A. Matthews, James A. McLaughlin, Christopher M. J. Osborne, Alex G. M. Pietrow, Vanessa Polito, Alex J. B. Russell, Peter F. Wyper · 2025

Solar flares are the largest energy-release events in the Solar System, allowing us to study fundamental physical phenomena under extreme conditions. Those include magnetic reconnection, particle acce…

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Physics Preprint PDF DOI

Cloud Properties and Star Formation in M31

J. Armijos-Abendano, S. A. Eales, M. W. L. Smith · 2025

We present a catalogue of 453 molecular clouds in M31 extracted from CO J=1-0 data observed with CARMA using a dendrogram. Our clouds have the mean values of 2.8 km s$^{-1}$, 22.1 pc and 10$^{5.2}$ M$…

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Microlensing Black Hole Shadows-II: Constraining Primordial Black Hole Dark Matter using the photon rings of M87 and Sgr A*

Himanshu Verma, Priyanka Sarmah, Joseph Silk, Kingman Cheung · 2025

The resolution of photon rings of Sgr~A$^*$ and M87 is the next milestone of upcoming EHT-like interferometries. We extend the formalism developed in our previous work~\cite{Verma:2023hes} to constrai…

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Detecting stellar flares in the presence of a deterministic trend and stochastic volatility

Qiyuan Wang, Giovanni Motta, Genaro Sucarrat, Vinay L. Kashyap · 2025

We develop a new and powerful method to analyze time series to rigorously detect flares in the presence of an irregularly oscillatory baseline, and apply it to stellar light curves observed with TESS.…

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Innovation ARIMA models application to predict pressure variations in water supply networks with open-loop control. Case study in Noja (Cantabria, Spain)

David Munoz-Rodriguez, Manuel J. Gonzalez-Ortega, Maria-Jesus Aguilera-Urena, Andres Ortega-Ballesteros, Alberto-Jesus Perea-Moreno · 2025

Water utilities are increasingly concerned about losses, leaks, and illegal connections in their distribution networks. Pressure control is typically managed through pressure reducing valves with elec…

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Sustainable NARMA-10 Benchmarking for Quantum Reservoir Computing

Avyay Kodali, Priyanshi Singh, Pranay Pandey, Krishna Bhatia, Shalini Devendrababu, Srinjoy Ganguly · 2025

This study compares Quantum Reservoir Computing (QRC) with classical models such as Echo State Networks (ESNs) and Long Short-Term Memory networks (LSTMs), as well as hybrid quantum-classical architec…

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