Postdoctoral Researcher· IIT Madras

Dr. Hariharan
Srinivasan

A physicist working at the intersection of complex systems, nonlinear dynamics, and data-driven science. My research focuses on mathematical modeling, noise-induced dynamics, emergent phenomena, and machine learning approaches for understanding and predicting the behavior of complex dynamical systems.

Extreme Events Neuronal Modeling Stochastic Dynamics Social Networks Reservoir Computing Complex Networks Solar Physics Fractional-Order Systems
Dr. Hariharan Srinivasan
01

About Me

I am a currently a Postdoctoral Researcher at the Indian Institute of Technology Madras (IITM), Chennai, working on a FedEx Industry Sponsored Project. My broader mission is to advance the understanding of complex dynamical systems by investigating the mechanisms underlying natural phenomena and their prediction using machine learning.

I aim to develop robust frameworks that not only explain the emergence of complex nonlinear phenomena but also provide tools for anticipating and controlling them in real-world systems.

Current Designation:

Postdoctoral Researcher
Indian Institute of Technology Madras, Chennai — 600036, India
FedEx Industry Sponsored Project

Programming

PythonFORTRANMATLAB

Tools & Software

LaTeXMathematicaGNUPlotXPPAUT

Research Skills

Scientific WritingData AnalysisBifurcation AnalysisManuscript Preparation
5
Journal Articles
30
Total Citations
4
h-index
3
Conf. Presentations
02

Education

2022 – 2025
Ph.D. — SASTRA Deemed to be University, Thanjavur, Tamil Nadu
Centre for Nonlinear Science & Engineering, Dept. of Physics, School of EEE
Thesis: Exploring Noise-Induced Extreme Events in Neuronal Oscillators, Networks and Machine-Learning Forecasts
Advisor: Dr. R. Suresh
2019 – 2021
M.Sc. Physics — SASTRA Deemed to be University, Thanjavur, Tamil Nadu
CGPA: 8.6829 / 10
Thesis: Advent of Extreme Events in the Sun — Applied DFA to sunspot data
2016 – 2019
B.Sc. Physics — SCSVMV University, Kanchipuram, Tamil Nadu
CGPA: 9.13 / 10
03

Research Projects

🧠
Associative Memory in Complex Dynamical Systems (Currently Exploring)

Investigating associative memory and pattern retrieval in coupled nonlinear oscillator networks. Exploring how collective dynamics, synchronization, and network architecture influence memory storage, retrieval, and robustness in biologically inspired systems.

Associative Memory Nonlinear Dynamics Neural Networks
👥
Dynamics of Social Networks (Currently Exploring)

Exploring social networks as complex dynamical systems to understand information diffusion, collective behavior, and emergent phenomena. Developing theoretical and data-driven models to predict information cascades and large-scale social dynamics.

Information CascadesStochastic DynamicsNetworks
⚡
Noise-Induced Extreme Events in Neuronal Oscillators

Exploring the mechanisms of noise-induced extreme events in FitzHugh–Nagumo and Hindmarsh–Rose neuron models — from single units to globally coupled and multiplex networks. Introduced a novel measure to characterize EE at microscopic and macroscopic scales.

FHN ModelStochastic DynamicsNetworks
🧠
Clustered Echo State Network (ESN)

Developed a novel ESN algorithm — Clustered ESN — for multivariate time series prediction, with application to stock market data and solar wind measurements. Explored the role of various reservoir topologies in prediction accuracy.

Reservoir ComputingESNForecasting
☀️
Extreme Events in Solar Physics

Applied Detrended Fluctuation Analysis (DFA) to sunspot data to investigate long-memory effects in solar extreme events. Characterized long-range dependence, long-tail distributions, and inter-event interval (IEI) distributions.

Solar PhysicsDFALong-Memory
🔀
Fractional-Order Memristive Neuron Models

Comprehensive study of noise-induced extreme events in integer and fractional-order memristive Hindmarsh–Rose neuron models, revealing the distinct roles of fractional dynamics and memristive coupling.

Fractional-OrderMemristorHR Neuron
04

Publications

5
Journal Articles
36
Total Citations
4
h-index
Google Scholar
Source
01
Heterogeneous noise-induced extreme events and synchronization in a globally coupled network of FitzHugh–Nagumo oscillators
Hariharan, S., Suresh, R., & Chandrasekar, V. (2026a)
Chaos, Solitons & Fractals, 203, 117652
DOI ↗
02
Synchronization and extreme events in multiplex FitzHugh–Nagumo networks under heterogeneous noise
Hariharan, S., Suresh, R., & Chandrasekar, V. (2026b)
Chaos: An Interdisciplinary Journal of Nonlinear Science, 36(3)
DOI ↗
03
Noise-induced extreme events in single FitzHugh–Nagumo oscillator
Hariharan, S., Suresh, R., & Chandrasekar, V. K. (2025)
Chaos, Solitons & Fractals, 192, 116077
DOI ↗
04
Multivariate time series prediction using clustered echo state network
Hariharan, S., Suresh, R., & Chandrasekar, V. (2025)
The European Physical Journal Plus, 140(11), 1133
DOI ↗
05
Noise-induced extreme events in integer and fractional-order memristive Hindmarsh–Rose neuron models: A comprehensive study
Hariharan, S., Suresh, R., & Chandrasekar, V. K. (2024)
The European Physical Journal Plus, 139(3), 292
DOI ↗
View All on Google Scholar ↗
05

Conference Presentations

Contributory Talk
Correlation-Guided and Dynamics Trained Clustered Echo State Network: Application - Early Prediction of Information Cascades
Conference on Nonlinear Systems and Dynamics (CNSD-2026) · IISER Thiruvananthapuram, India · 07–10 July 2026
Oral
Unveiling Noise-Induced Extreme Events: From Single Neuron to Network Dynamics
Conference on Nonlinear Systems and Dynamics (CNSD-2025) · Bharathidasan University, Trichy, India · 10–13 March 2025
Poster
Noise Induced Extreme Events in Fractional Order Memristor based Hindmarsh–Rose Neuron Model
Complexity and Nonlinear Dynamics in STEM (CNLDS-2023) · IIT Hyderabad, India · 5–7 June 2023
Poster
Long memory in the extreme events of the Sun
13th Conference on Nonlinear Systems and Dynamics (CNSD-2021) · SASTRA University, Thanjavur, India · December 2021
06

Get in Touch

I'm open to discussions on research collaborations, postdoctoral opportunities, conference invitations, or just an engaging conversation about nonlinear dynamics, stochastic systems, and machine learning. Feel free to reach out.