19 citations · 71 across the 13 of their papers we have counts for
13 papers
Ultraslow Growth of Domains in a Random-Field System With Correlated Disorder
Subhanker Howlader, Prasenjit Das, Manoj Kumar
We study domain growth kinetics in a random-field system in the presence of a spatially correlated disorder after an instantaneous quench at a finite temperature $T…
Ordering transition of the three-dimensional four-state random-field Potts model
Manoj Kumar, Martin Weigel
Spin systems exposed to the influence of random magnetic fields are paradigmatic examples for studying the effect of quenched disorder on condensed-matter systems. In this context,…
Minimizing the phase structure of quark mass matrices
Nikhila Awasthi, Manoj Kumar, Monika Randhawa +1
Fritzsch-Xing matrices are a particular class of texture 4 zero hermitian quark mass matrices, known to be successful in accommodating the quark mixing data. In the present work, i…
Critical behavior of the three-state random-field Potts model in three dimensions
Manoj Kumar, Varsha Banerjee, Sanjay Puri +1
Enormous advances have been made in the past 20 years in our understanding of the random-field Ising model, and there is now consensus on many aspects of its behavior at least in t…
Quasi-exact ground-state algorithm for the random-field Potts model
Manoj Kumar, Martin Weigel
The use of combinatorial optimization algorithms has contributed substantially to the major progress that has occurred in recent years in the understanding of the physics of disord…
Domain Growth and Aging in the Random Field XY Model: A Monte Carlo Study
Ramgopal Agrawal, Manoj Kumar, Sanjay Puri
We use large-scale Monte Carlo simulations to obtain comprehensive results for domain growth and aging in the random field XY model in dimensions . After a deep quench from…
Coexistence of coarsening and mean field relaxation in the long-range Ising chain
Federico Corberi, Alessandro Iannone, Manoj Kumar +2
We study the kinetics after a low temperature quench of the one-dimensional Ising model with long range interactions between spins at distance decaying as . For ,…
On the comparison of optimization algorithms for the random-field Potts model
Manoj Kumar, Martin Weigel
For many systems with quenched disorder the study of ground states can crucially contribute to a thorough understanding of the physics at play, be it for the critical behavior if t…
Growth Kinetics and Aging Phenomena in a Frustrated System
Manoj Kumar, Federico Corberi, Eugenio Lippiello +1
We study numerically the ordering kinetics in a two-dimensional Ising model with random coupling where the fraction of antiferromagnetic links can be gradually tuned. We show t…
Transport, correlations, and chaos in a classical disordered anharmonic chain
Manoj Kumar, Anupam Kundu, Manas Kulkarni +2
We explore transport properties in a disordered nonlinear chain of classical harmonic oscillators and thereby identify a regime exhibiting behavior analogous to that seen in quantu…
Effects of Frustration on Fluctuation-dissipation Relations
Federico Corberi, Manoj Kumar, Eugenio Lippiello +1
We study numerically the aging properties of the two-dimensional Ising model with quenched disorder considered in our recent paper [Phys. Rev. E 95, 062136 (2017)], where frustrati…
Approximate ground states of the random-field Potts model from graph cuts
Manoj Kumar, Ravinder Kumar, Martin Weigel +3
While the ground-state problem for the random-field Ising model is polynomial, and can be solved using a number of well-known algorithms for maximum flow or graph cut, the analogue…
Equilibrium structure and off-equilibrium kinetics of a magnet with tunable frustration
Federico Corberi, Manoj Kumar, Eugenio Lippiello +1
We study numerically a two-dimensional random-bond Ising model where frustration can be tuned by varying the fraction of antiferromagnetic coupling constants. At low temperatur…