A5063227817- Topological Materials and Phenomena
- Quantum and electron transport phenomena
- Quantum Electrodynamics and Casimir Effect
- Earthquake Detection and Analysis
- Mechanical and Optical Resonators
- Cold Atom Physics and Bose-Einstein Condensates
- Physics of Superconductivity and Magnetism
- Quantum and Classical Electrodynamics
- Quantum Mechanics and Non-Hermitian Physics
- Computational Drug Discovery Methods
- Microtubule and mitosis dynamics
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Graphene research and applications
- Quantum Information and Cryptography
- Geomagnetism and Paleomagnetism Studies
- Intermetallics and Advanced Alloy Properties
- Advanced Condensed Matter Physics
- Magneto-Optical Properties and Applications
- Pharmacological Receptor Mechanisms and Effects
- Advanced Combinatorial Mathematics
- Photorefractive and Nonlinear Optics
- Quantum Mechanics and Applications
- Supramolecular Self-Assembly in Materials
- Synthesis and Properties of Aromatic Compounds
University of Illinois Urbana-Champaign
2019-2024
Indian Institute of Technology Madras
2015-2019
In this work, we propose the quantum Hall system as a platform for exploring black hole phenomena. By exhibiting deep rooted commonalities between lowest Landau level and spacetime symmetries, show that features of both gravitational systems can be elegantly captured by simple mechanical model, inverted harmonic oscillator. Through correspondence, argue radiation phenomena in situations, such presented W. G. Unruh S. Hawking, bears parallel with saddle-potential scattering quasiparticles. We...
More than fifty years ago, excitonic insulators, formed by the pairing of electrons and holes due to Coulomb interactions, were first predicted. Since then, insulators have been observed in various classes materials, including quantum Hall bilayers, graphite, transition metal chalcogenides, more recently moire superlattices. In these an electron a hole with same spin bind together resulting exciton is singlet. Here, we report experimental observation spin-triplet insulator ultra-quantum...
We characterize topological features of Josephson junctions formed by coupled mesoscopic chiral $p$-wave superconducting islands. Through analytic and numerical studies the low-lying BdG (Bogoliubov-deGennes) spectrum, we identify localized MBS (Majorana bound states) nucleated in vortices application a perpendicular magnetic field. Additionally, demonstrate existence an extended that is delocalized around outer perimeter islands, which has measurable consequences on supercurrent phase...
Extreme space weather events occur during intervals of strong solar wind electric fields. Curiously these intervals, their impact on measures the Earth's response, like polar cap index, is not as high expected. Theorists have put forward a host explanations for this saturation effect, but there no consensus. Here we show that merely perception created by uncertainty in measurements, especially measurement times. Correcting reveals extreme elicit ~300% larger than previously thought....
In this article, we present a systematic study of quantum statistics and dynamics pair anyons in the lowerst Landau level (LLL), direct relevance to quasiparticle excitations Hall bulk. We develop formalism for such two-dimensional setting two charged particles subject transverse field, including fractional angular momentum states related algebra stemming from anyonic boundary condition, coherent state descriptions localized anyons, bunching features associated with anyons. analyze dynamic...
We investigate connectivity properties of the SARS-CoV2 spike protein-human ACE2-receptor complex employing a protein side chain-based network method that allows us to span range from atomic global scales. analyze topology in terms clusters and cliques obtained averaging over snapshots MD simulations (from D.E. Shaw Research). demonstrate forms more dominant, robust connection with as compared less virulent SARS-CoV1. Globally, this stronger is reflected by our percolation analysis where...
We study the classical mechanics and dynamics of particles that retains some memory quantum statistics. Our work builds on earlier statistical thermodynamics such particles. Starting from effective manifold associated with two-particle bosonic fermionic coherent states, we show how their exchange statistics is reflected in symplectic form manifold. demonstrate analogues exclusion or bunching behavior expected states by studying trajectories various quadratic potentials. examples are one...
We describe a scheme to exchange fermion parity between two pairs of Majorana bound states mediated by coupling with centralized quantum dot. formulate such for nucleated in the Josephson vortices formed fourfold crossroads junction planar topological superconductors presence perpendicular magnetic field. This platform yields several advantages execution our as compared similar ideas proposed wire geometries, including control over positions (MBS) and hence tunable show that moving MBS along...
The minimal coupling of strain to Dirac and Weyl semimetals, its modeling as a pseudo-gauge field has been extensively studied, resulting in several proposed topological transport signatures. In this work, we study the effects on higher winding number semimetals show that is not for any larger than one. We focus double-Weyl semimetal an illustrative example application splits nodes produces anisotropic Fermi surface. Specifically, surface acquires nematic order. By extending chiral kinetic...
Space-based Proton-Electron Energy Detector (SPEED) is a payload that being developed to be launched onboard the Indian Institute of Technology Madras (IIT Madras) nano-satellite (IITMSAT). The scientific objective gather data on variations in charge particle flux below inner Van Allen radiation belts. SPEED designed obtain energy spectra high-energy protons and electrons, specifically investigate correlations between these seismic activity, solar flares lighting storms. In this paper, we...
Abstract A microtubule is a cylindrical biological polymer that plays key roles in cellular structure, transport, and signalling. In this work, based on studies of electronic properties polyacetelene mechanical microtubules themselves (Spakowitz A. J., Phys. Rev. Lett. , 103 (2009) 248101), we explore the possibility could act as topological insulators are gapped to excitations bulk but possess robust bounds states at tube ends. Through analyses structural properties, model stack...
<p>The polar cap potential, a measure of the magnetosphere's response to solar wind, levels off during high wind electric field values. Several explanations have been proposed for this saturation effect, but there has no consensus. We show that may <em>merely be </em><em>perception</em> created by uncertainty in measurements and its propagation cap. Correcting reveals true is linear across full range These findings...
We describe a scheme to exchange fermion parity between two pairs of Majorana bound states mediated by coupling with centralized quantum dot. specifically formulate such for nucleated in the Josephson vortices formed four-fold crossroads junction planar topological superconductors presence perpendicular magnetic field. This platform yields several advantages execution our as compared similar ideas proposed wire geometries, including control over positions MBS and hence, tunable show that...
We study a one-parameter family (\ell=1,2,3,…) of configurations that are square-ice analogues plane partitions. Using an algorithm due to Bratley and McKay, we carry out exact enumerations in order their asymptotic behaviour establish, via Monte Carlo simulations as well explicit bounds, the is similar finally series analysis provide independent estimates for behaviour.