1.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Tata Institute of Fundamental ResearchIN874 papers
- Centre National de la Recherche ScientifiqueFR832 papers
- California Institute of TechnologyUS802 papers
- University of Maryland, College ParkUS798 papers
- Cornell UniversityUS796 papers
- Saha Institute of Nuclear PhysicsIN796 papers
- University of AntwerpBE796 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT794 papers
- National Central UniversityTW794 papers
- University of WarsawPL794 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaIT793 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TriesteIT793 papers
26 papers · 1 filter
NMR implementation of Quantum Delayed-Choice Experiment
Soumya Singha Roy, Abhishek Shukla, T. S. Mahesh
We report the first experimental demonstration of quantum delayed-choice experiment via nuclear magnetic resonance techniques. An ensemble of molecules each with two spin-1/2 nucle…
Spinon heat transport and spin-phonon interaction in the antiferromagnetic spin-1/2 Heisenberg chain cuprates Sr2CuO3 and SrCuO2
N. Hlubek, X. Zotos, S. Singh +4
We have investigated the thermal conductivity κ_mag of high-purity single crystals of the spin chain compound Sr2CuO3 which is considered an excellent realization of the one-dimens…
Extreme events and event size fluctuations in biased random walks on networks
Vimal Kishore, M. S. Santhanam, R. E. Amritkar
Random walk on discrete lattice models is important to understand various types of transport processes. The extreme events, defined as exceedences of the flux of walkers above a pr…
Solutions of Several Coupled Discrete Models in terms of Lame Polynomials of Arbitrary Order
Avinash Khare, Avadh Saxena, Apoorva Khare
Coupled discrete models abound in several areas of physics. Here we provide an extensive set of exact quasiperiodic solutions of a number of coupled discrete models in terms of Lam…
Forced Nonlinear Schroedinger Equation with Arbitrary Nonlinearity
Fred Cooper, Avinash Khare, Niurka R. Quintero +2
We consider the nonlinear Schr{ö}dinger equation (NLSE) in 1+1 dimension with scalar-scalar self interaction in the presence of the external for…
Fundamental properties of five Kepler stars using global asteroseismic quantities and ground-based observations
O. L. Creevey, G. Dogan, A. Frasca +34
We present an asteroseismic study of the solar-like stars KIC 11395018, KIC 10273246, KIC 10920273, KIC 10339342, and KIC 11234888 using short-cadence time series of more than eigh…
Detection of off-pulse emission from PSR B0525+21 and PSR B2045-16
Rahul Basu, Ramana Athreya, Dipanjan Mitra
We report the detection of off-pulse emission from two long period pulsars PSR B0525+21 and PSR B2045-16 using the Giant Metrewave Radio Telescope (GMRT). We recorded high time res…
The MOR cryptosystem and extra-special -groups
Ayan Mahalanobis
This paper studies the MOR cryptosystem, using the automorphism group of the extra-special -group of exponent , for an odd prime . Similar results can be obtained for extr…
Non-perturbative corrections to mean-field behavior: spherical model on spider-web graph
Ajit C. Balram, Deepak Dhar
We consider the spherical model on a spider-web graph. This graph is effectively infinite-dimensional, similar to the Bethe lattice, but has loops. We show that these lead to non-t…
Dynamical Decoupling of Spin-Clusters using Solid State NMR
Abhishek Shukla, T. S. Mahesh
In this work we experimentally study the efficiency of various dynamical decoupling sequences for suppressing decoherence of single as well as multiple quantum coherences on large…
Calorimetric study of the superconducting and normal state properties of Ca(Fe1-xCox)2As2
M. Abdel-Hafiez, L. Harnagea, S. Singh +5
We present a calorimetric study on single crystals of Ca(Fe1-xCox)2As2 (x = 0, 0.032, 0.051, 0.056, 0.063, and 0.146). The combined first order spin-density wave/structural transit…
An unlikely radio halo in the low X-ray luminosity galaxy cluster RXC J1514.9-1523
Simona Giacintucci, Daniele Dallacasa, Tiziana Venturi +4
We report the discovery of a giant radio halo in the galaxy cluster RXC J1514.9-1523 at z=0.22 with a relatively low X-ray luminosity, $L_{X \, [0.1-2.4 \rm \, kev]} \sim 7 \times…
Directed transport in equilibrium : analysis of the dimer model with inertial terms
A. Bhattacharyay
We have previously shown an analysis of our dimer model in the over-damped regime to show directed transport in equilibrium. Here we analyze the full model with inertial terms pres…
Voltage modulated electro-luminescence spectroscopy and negative capacitance - the role of sub-bandgap states in light emitting devices
Kanika Bansal, Shouvik Datta
Voltage modulated electroluminescence spectra and low frequency ({\leq} 100 kHz) impedance characteristics of electroluminescent diodes are studied. Voltage modulated light emissio…
Ultrafast Dynamics of Gold Nanorods: Tuning between Photo-Bleaching and Photo-Induced Absorption
M. Anija, Sunil Kumar, N. Kamaraju +3
We report ultrafast electron dynamics in gold nanorods investigated using 80 fs laser pulses centered at 1.57 eV. Five types of nanorod colloidal suspensions in water having their…
Revisiting Langer-Ambegaokar-McCumber-Halperin theory of resistive transitions in one-dimensional superconductors with exact solutions
Darshan G. Joshi, A. Bhattacharyay
We present an important correction to the Langer-Ambegaokar-McCumber-Halperin theory for the resistive state of a 1D superconductor. We establish that the identification of the sad…
Do we need to revisit the Bohr exciton radius of hot excitons?
Padmashri V. Patil, Shouvik Datta
We report collisional broadening of the E3 excitonic resonances in optical absorption spectra of PbS nanocrystallites of widely varying sizes. Significance of the underlying extend…
An elusive radio halo in the merging cluster Abell 781?
T. Venturi, S. Giacintucci, D. Dallacasa +4
Deep radio observations of the galaxy cluster Abell 781 have been carried out using the Giant Metrewave Radio Telescope at 325 MHz and have been compared to previous 610 MHz observ…
On interrelations of recurrences and connectivity trends between stock indices
B. Goswami, G. Ambika, N. Marwan +1
Financial data has been extensively studied for correlations using Pearson's cross-correlation coefficient ρ as the point of departure. We employ an estimator based on recurrence p…
Localised HI 21-cm absorption towards a double-lobed z=0.24 radio galaxy
S. J. Curran, M. T. Whiting, J. K. Webb +1
We present the results of a mini-survey for associated HI 21-cm absorption at z < 0.42 with the Giant Metrewave Radio Telescope. Our targets are radio galaxies, selected on the bas…
A combined low-radio frequency/X-ray study of galaxy groups I. Giant Metrewave Radio Telescope observations at 235 MHz and 610 MHz
Simona Giacintucci, Ewan O'Sullivan, Jan Vrtilek +12
We present new Giant Metrewave Radio Telescope observations at 235 MHz and 610 MHz of 18 X-ray bright galaxy groups. These observations are part of an extended project, presented h…
A manifestly MHV Lagrangian for N=4 Yang-Mills
Sudarshan Ananth, Stefano Kovacs, Sarthak Parikh
We derive a manifestly MHV Lagrangian for the N=4 supersymmetric Yang-Mills theory in light-cone superspace. This is achieved by constructing a canonical redefinition which maps th…
Extreme events on complex networks
Vimal Kishore, M. S. Santhanam, R. E. Amritkar
We study the extreme events taking place on complex networks. The transport on networks is modelled using random walks and we compute the probability for the occurance and recurren…
Storing entanglement of nuclear spins via Uhrig Dynamical Decoupling
Soumya Singha Roy, T. S. Mahesh, G. S. Agarwal
Stroboscopic spin flips have already been shown to prolong the coherence times of quantum systems under noisy environments. Uhrig's dynamical decoupling scheme provides an optimal…