Lecture - 2 | The Klein-Gordon Relativistic Equation: Free Particle | Relativistic Quantum Mechanics

In this lecture, we derive the Klein - Gordon relativistic equation for a free particle. ------------- References: 1. A Text book of Quantum Mechanics: P. M. Mathews and K. Venkatesan (Tata McGraw Hill, New Delhi) 2. Modern Quantum Mechanics: J. J. Sakurai (Addison Wesley) 3. Quantum Mechanics: G. Aruldhas (Second Ed., PHI Learning Pvt. Ltd.) 4. Lectures on Quantum Field Theory: Ashok Das (World Scientific) 5. Concepts of Particle Physics Vol. 1: K. Gottfried and V. F. Weisskopf (Oxford University Press)