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
33 papers · 1 filter
Quantifying quantumness via commutators: an application to quantum walk
Pavan Iyengar, G. N. Chandan, R. Srikanth
The question of witnessing or quantifying nonclassicality of quantum systems has been addressed in various ways. For a given system or theory, we propose identifying it with the in…
Viable cosmological solutions in massive bimetric gravity
Frank Könnig, Aashay Patil, Luca Amendola
We find the general conditions for viable cosmological solution at the background level in bigravity models. Furthermore, we constrain the parameters by comparing to the Union 2.1…
Dynamical behaviours in time-delay systems with delayed feedback and digitized coupling
Chiranjit Mitra, G. Ambika, Soumitro Banerjee
We consider a network of delay dynamical systems connected in a ring via unidirectional positive feedback with constant delay in coupling. For the specific case of Mackey-Glass sys…
An asymptotic formula in q for the number of [n,k] q-ary MDS codes
Krishna Kaipa
We obtain an asymptotic formula in q for the number of MDS codes of length n and dimension k over a finite field with q elements.
Action-at-a-distance electrodynamics in Quasi-steady-state cosmology
Kaustubh Sudhir Deshpande
Action-at-a-distance electrodynamics - alternative approach to field theory - can be extended to cosmological models using conformal symmetry. An advantage of this is that the orig…
Self assembly of monodisperse CdS nano-cylinders with a pore
Kiruthiga Jagadeesan, Apratim Chatterji
We present investigate the self assembly and growth of an array of nanotubes: a consequence of a fine balance of directed motion, diffusion and aggregation of reacting ${\rm…
The Scattering amplitude for Rationally extended shape invariant Eckart potentials
Rajesh Kumar Yadav, Avinash Khare, Bhabani Prasad Mandal
We consider the rationally extended exactly solvable Eckart potentials which exhibit extended shape invariance property. These potentials are isospectral to the conventional Eckart…
Higher spin theory in 3-dimensional flat space
Hamid Afshar, Arjun Bagchi, Reza Fareghbal +2
We present the first example of a non-trivial higher spin theory in 3-dimensional flat space. We propose flat-space boundary conditions and prove their consistency for this theory.…
Unification of Bell, Leggett-Garg and Kochen-Specker inequalities: A hybrid spatio-temporal inequality
Siddhartha Das, S. Aravinda, R. Srikanth +1
The Bell-type (spatial), Kochen-Specker (contextuality) or Leggett-Garg (temporal) inequalities are based on classically plausible but otherwise quite distinct assumptions. For any…
PT-Symmetric Dimer of Coupled Nonlinear Oscillators
J. Cuevas, P. G. Kevrekidis, A. Saxena +1
We provide a systematic analysis of a prototypical nonlinear oscillator system respecting PT-symmetry i.e., one of them has gain and the other an equal and opposite amount of loss.…
Simulation of mirror inversion of quantum states in an XY spin chain using NMR
K. Rama Koteswara Rao, T. S. Mahesh, Anil Kumar
We report an experimental quantum simulation of unitary dynamics of an XY spin chain with pre-engineered couplings. Using this simulation, we demonstrate the mirror inversion of qu…
Quantum simulations of a particle in one-dimensional potentials using NMR
Ravi Shankar, Swathi S. Hegde, T. S. Mahesh
A classical computer simulating Schrodinger dynamics of a quantum system requires resources which scale exponentially with the size of the system, and is regarded as inefficient fo…
Stabilizing spatially structured populations through Adaptive Limiter Control
Pratha Sah, Sutirth Dey
Stabilizing the dynamics of complex, non-linear systems is a major concern across several scientific disciplines including ecology and conservation biology. Unfortunately, most met…
Nonlocal interactions in a BEC: an Analogue Gravity perspective
Supratik Sarkar, A. Bhattacharyay
We add a minimal correction term to the local Gross-Pitaevskii equation to represent non-locality in the interactions. We show that the effective minimal non-locality can make the…
Freezing a Quantum Magnet by Repeated Quantum Interference: An Experimental Realization
Swathi S. Hegde, Hemant Katiyar, T. S. Mahesh +1
We experimentally demonstrate the phenomenon of dynamical many-body freezing in a periodically driven Ising chain. Theoretically [Phys. Rev. B 82, 172402 (2010)], for certain value…
Learning theories reveal loss of pancreatic electrical connectivity in diabetes as an adaptive response
Pranay Goel, Anita Mehta
Cells of almost all solid tissues are connected with gap junctions which permit the direct transfer of ions and small molecules, integral to regulating coordinated function in the…
The Extended GMRT Radio Halo Survey I: New upper limits on radio halos and mini-halos
R. Kale, T. Venturi, S. Giacintucci +5
A fraction of galaxy clusters host diffuse radio sources called radio halos, radio relics and mini-halos. We present the sample and first results from the Extended GMRT Radio Halo…
Novel coupling scheme to control dynamics of coupled discrete systems
Snehal M. Shekatkar, G. Ambika
We present a new coupling scheme to control spatio-temporal patterns and chimeras on 1-d and 2-d lattices and random networks of discrete dynamical systems. The scheme involves cou…
Strong constraints on magnetized white dwarfs surpassing the Chandrasekhar mass limit
Rajaram Nityananda, Sushan Konar
We show that recently proposed white dwarf models with masses well in excess of the Chandrasekhar limit, based on modifying the equation of state by a super-strong magnetic field i…
Inversion of moments to retrieve joint probabilities in quantum sequential measurements
H. S. Karthik, Hemant Katiyar, Abhishek Shukla +3
A sequence of moments encode the corresponding probability distribution. Probing if quantum joint probability distribution can be retrieved from the associated set of moments -- re…
High rigidity Forbush decreases: due to CMEs or shocks?
Arun Babu, H. M. Antia, S. R. Dugad +7
We seek to identify the primary agents causing Forbush decreases (FDs) observed at the Earth in high rigidity cosmic rays. In particular, we ask if such FDs are caused mainly by co…
Statistical Mechanics of a Discrete Schrödinger Equation with Saturable Nonlinearity
Mogens R. Samuelsen, Avinash Khare, Avadh Saxena +1
We study the statistical mechanics of the one-dimensional discrete nonlinear Schrödinger (DNLS) equation with saturable nonlinearity. Our study represents an extension of earlier w…
Low-frequency radio observations of Seyfert galaxies: A test to the unification scheme
Veeresh Singh, Prajval Shastri, Ishwara-Chandra C. H. +1
Aims. We present low-frequency radio imaging and spectral properties of a well defined sample of Seyfert galaxies using GMRT 240/610 MHz dual frequency observations. Radio spectra…
Cubic interaction vertices in higher spin theories
Y. S. Akshay, Sudarshan Ananth
Based purely on symmetry considerations, we derive the following result: in momentum space, the coefficient of the cubic interaction vertex for a spin field is equal to the cor…