20 citations · 83 across the 16 of their papers we have counts for
17 papers
Disorder induced time crystal in athermal random field Ising model with non-reciprocal interactions
Aldrin B E, Sumedha
A two species random field Ising model with non-reciprocal interactions between the species is studied using the greedy Glauber dynamics. By solving the dynamics exactly on a compl…
Free energy landscape of Dense Associative Memory
Sumedha, Abhishek Singh
Using large deviations theory, we solve and obtain a general expression for the free energy functional for a broad class of associative memories, including dense associative memori…
Glauber dynamics phase transitions in athermal random field Blume-Capel and Blume-Emery-Griffiths models
Sumedha, Aldrin B E
We solve the two models for Glauber dynamics and in equilibrium, both in the presence and absence of the external magnetic field on a complete graph. We compare the steady state of…
Three state random energy model
Sumedha, Matteo Marsili
We introduce a spin-1 version of the random energy model with crystal field. Crystal field controls the density of 0 spins in the system. We solve the model in the micro-canonincal…
Inverse transitions and disappearance of the λ-line in the asymmetric random field Ising and Blume-Capel models
Santanu Das, Sumedha
We report on reentrance in the random field Ising and Blume-Capel models, induced by an asymmetric bimodal random field distribution. The conventional continuous line of transition…
Critical behaviour near critical end points and tricritical points in disordered spin-1 ferromagnets
Soheli Mukherjee, Sumedha
Critical end points and tricritical points are multicritical points that separate lines of continuous transitions from lines of first order transitions in the phase diagram of many…
Multiple transitions in an infinite range p-spin random-crystal field Blume Capel model
Santanu Das, Sumedha
We study a -spin model with ferromagnetic coupling and quenched random-crystal fields for for spin-1 systems. We find that the model has lines of first order transitio…
Phase transitions in the Blume-Capel model with trimodal and Gaussian random fields
Soheli Mukherjee, Sumedha
We study the effect of different symmetric random field distributions: trimodal and Gaussian on the phase diagram of the infinite range Blume-Capel model. For the trimodal random f…
Phase transitions in XY models with randomly oriented crystal fields
Sumedha, M. Barma
We obtain a representation of the free energy of an XY model on a fully connected graph with spins subjected to a random crystal field of strength and with random orientation $…
Hysteresis and return point memory in the random field Blume Capel model
B. E. Aldrin, Abdul Khaleque, Sumedha
We study the zero temperature steady state of the random field Blume Capel model with spin-flip Glauber dynamics on a random regular graph. The magnetization m as a function of the…
Rejection-free cluster Wang-Landau algorithm for hard-core lattice gases
Asweel Ahmed A. Jaleel, Jetin E. Thomas, Dipanjan Mandal +2
We introduce a rejection-free, flat histogram, cluster algorithm to determine the density of states of hard-core lattice gases. We show that the algorithm is able to efficiently sa…
Solution of the random field magnet on a fully connected graph
Sumedha, Mustansir Barma
We use large deviation theory to obtain the free energy of the XY model on a fully connected graph on each site of which there is a randomly oriented field of magnitude . The ph…
Phase diagram of the repulsive Blume-Emery-Griffiths model in the presence of external magnetic field on a complete graph
Soheli Mukherjee, Raj Kumar Sadhu, Sumedha
For the repulsive Blume-Emery-Griffiths model the phase diagram in the space of three fields, temperature (T), crystal field (), and magnetic field (H), is computed on a complet…
Emergence of a bicritical end point in the random crystal field Blume-Capel model
Sumedha, Soheli Mukherjee
We obtain the phase diagram for the Blume-Capel model with bimodal distribution for random crystal fields, in the space of three fields: temperature, crystal field and magnetic fie…
Conformal Bootstrap Signatures of the Tricritical Ising Universality Class
Chethan N Gowdigere, Jagannath Santara, Sumedha
We study the tricritical Ising universality class using conformal bootstrap techniques. By studying bootstrap constraints originating from multiple correlators on the CFT data of m…
Absence of first order transition in the random crystal field Blume-Capel model on a fully connected graph
Sumedha, Nabin K Jana
In this paper we solve the Blume-Capel model on a complete graph in the presence of random crystal field with a distribution, , using large deviat…
Effect of random field disorder on the first order transition in -spin interaction model
Sumedha, Sushant K. Singh
We study the random field -spin model with Ising spins on a fully connected graph using the theory of large deviations in this paper. This is a good model to study the effect of…