Quantum Physics I

This lecture delves into the foundational concepts of quantum physics, focusing on Hamiltonians, Schrodinger equations, and composite systems. The instructor explains the transition from three-dimensional systems to one-dimensional problems, emphasizing the significance of effective Schrodinger equations. The discussion extends to Coulomb potentials, hydrogen atoms, and energy levels, highlighting the stability of matter. The lecture also explores the concept of entanglement in composite systems, illustrating the mathematical formalism behind tensor products and Hilbert spaces. The instructor clarifies the behavior of operators in composite systems and the implications of measurements on quantum states.