Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only! Grab it Learn about linear cosmological perturbation theory in this 68-minute lecture from Prof. L. Sriramkumar of IIT Madras, delivered as part of the 3rd Vignyana Patashala series focusing on the physics of inflation and reheating. Explore fundamental concepts in cosmological physics and gain insights into how small perturbations in the early universe evolved into the large-scale structures we observe today.