Mediaspace scheduled maintenance: Aug 25, 2026 07:00 - 12:00 AM. During this time, videos will be temporarily unavailable. Check status updates.

Lecture

Time-Independent Perturbations: Part 4

Description

This lecture covers the concept of perturbations in quantum mechanics, focusing on time-independent perturbations and their effects on the energy levels of a system. The instructor explains how to calculate the perturbed energy levels and discusses examples of perturbations in different scenarios.

Official source

Related concepts (28)

Quantum mechanics

Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science. Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary (macroscopic) scale, but is not sufficient for describing them at small (atomic and subatomic) scales.

Quantum simulator

Quantum simulators permit the study of a quantum system in a programmable fashion. In this instance, simulators are special purpose devices designed to provide insight about specific physics problems. Quantum simulators may be contrasted with generally programmable "digital" quantum computers, which would be capable of solving a wider class of quantum problems. A universal quantum simulator is a quantum computer proposed by Yuri Manin in 1980 and Richard Feynman in 1982.

Quantum computing

A quantum computer is a computer that exploits quantum mechanical phenomena. At small scales, physical matter exhibits properties of both particles and waves, and quantum computing leverages this behavior, specifically quantum superposition and entanglement, using specialized hardware that supports the preparation and manipulation of quantum states. Classical physics cannot explain the operation of these quantum devices, and a scalable quantum computer could perform some calculations exponentially faster than any modern "classical" computer.

Interpretations of quantum mechanics

An interpretation of quantum mechanics is an attempt to explain how the mathematical theory of quantum mechanics might correspond to experienced reality. Although quantum mechanics has held up to rigorous and extremely precise tests in an extraordinarily broad range of experiments, there exist a number of contending schools of thought over their interpretation. These views on interpretation differ on such fundamental questions as whether quantum mechanics is deterministic or stochastic, local or non-local, which elements of quantum mechanics can be considered real, and what the nature of measurement is, among other matters.

Introduction to quantum mechanics

Quantum mechanics is the study of matter and its interactions with energy on the scale of atomic and subatomic particles. By contrast, classical physics explains matter and energy only on a scale familiar to human experience, including the behavior of astronomical bodies such as the moon. Classical physics is still used in much of modern science and technology. However, towards the end of the 19th century, scientists discovered phenomena in both the large (macro) and the small (micro) worlds that classical physics could not explain.

Related lectures (53)

Perturbation Theory in Quantum Mechanics

Explores perturbation theory in quantum mechanics, focusing on energy level calculations and providing exercise-solving hints.

Time-Independent Perturbations 2

Explores time-independent perturbations in quantum mechanics and their effects on energy levels and eigenstates.

Basis of Nuclear Magnetization MOOC: Fundamentals of Biomedical Imaging: Magnetic Resonance Imaging (MRI)

Explores the classical and quantum-mechanical basis of nuclear magnetization and the quantization of angular momentum and energy levels.

Hamiltonian of Heisenberg: Interaction and Energy Levels

Covers the Hamiltonian of Heisenberg and the interaction between classical magnetic moments.

Quantum Mechanics: Bound-State Problems