31 citations · 73 across the 12 of their papers we have counts for
12 papers
Critical quench dynamics of Wegner's gauge model: a geometric perspective
Ramgopal Agrawal, Leticia F. Cugliandolo, Marco Picco
Wegner's gauge model is the earliest formulation of pure lattice gauge theory and predicts the topological nature of the confinement-deconfinement transition. In thr…
Lack of self-averaging of the critical internal energy in a weakly-disordered Baxter model
Ramgopal Agrawal, Victor Dotsenko, Maxym Dudka +3
We investigate the first two moments of the critical internal energy in a weakly disordered two-dimensional Baxter eight-vertex model as a function of the system size , eval…
Nonconvex optimization methods for ground states in disordered continuous-spin models
Ramgopal Agrawal, Lorenzo Ciarpaglini, Pierluigi Mansueto +4
This work explores the global optimization problem of finding lowest-energy configurations in disordered continuous-spin models from statistical physics, with a particular focus on…
Domain Growth in Long-range Ising Models with Disorder
Ramgopal Agrawal, Federico Corberi, Eugenio Lippiello +1
Recent advances have highlighted the rich low-temperature kinetics of the long-range Ising model (LRIM). This study investigates domain growth in an LRIM with quenched disorder, fo…
The geometric phase transition of the three-dimensional lattice gauge model
Ramgopal Agrawal, Leticia F. Cugliandolo, Lara Faoro +2
After fifty years of lattice gauge theories (LGTs), the nature of the transition between their topological phases (confinement/deconfinement) remains challenging due to the absence…
Dynamical critical behavior on the Nishimori point of frustrated Ising models
Ramgopal Agrawal, Leticia F. Cugliandolo, Lara Faoro +2
By considering the quench dynamics of two-dimensional frustrated Ising models through numerical simulations, we investigate the dynamical critical behavior on the multicritical Nis…
Ordering Dynamics of the Random Field Long-range Ising Model in One Dimension
Ramgopal Agrawal, Federico Corberi, Eugenio Lippiello +1
We investigate the influence of long-range (LR) interactions on the phase ordering dynamics of the one-dimensional random field Ising model (RFIM). Unlike the usual RFIM, a spin in…
Nonequilibrium critical dynamics of the two-dimensional Ising model
Ramgopal Agrawal, Leticia F. Cugliandolo, Lara Faoro +2
The Ising model is a simple frustrated spin model, where the exchange couplings independently take the discrete value with probability and with probability $1…
Enhancement in Breaking of Time-reversal Invariance in the Quantum Kicked Rotor
Ramgopal Agrawal, Akhilesh Pandey, Sanjay Puri
We study the breaking of time-reversal invariance (TRI) by the application of a magnetic field in the quantum kicked rotor (QKR), using Izrailev's finite-dimensional model. There i…
Asymptotic States of Ising Ferromagnets with Long-range Interactions
Ramgopal Agrawal, Federico Corberi, Ferdinando Insalata +1
It is known that, after a quench to zero temperature (), two-dimensional () Ising ferromagnets with short-range interactions do not always relax to the ordered state. The…
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…
Kinetics of the Two-dimensional Long-range Ising Model at Low Temperatures
Ramgopal Agrawal, Federico Corberi, Eugenio Lippiello +2
We study the low-temperature domain growth kinetics of the two-dimensional Ising model with long-range coupling: , where is the dimensionality. Accordin…