Quantum mechanics of Operator Algebra

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Free Download Quantum mechanics of Operator Algebra
Published 5/2026
Created by Abhijit Sengupta
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Level: Beginner | Genre: eLearning | Language: English | Duration: 6 Lectures ( 2h 45m ) | Size: 1.4 GB

Operator algebra
What you'll learn
Basics of Quantum Mechanics Operators
Types of operators Eigen vales and Eigen function
Operators of Observable quantities
Angular momentum Operators ( Spherical polar Coordinate)
Hermitian Operator
Commutator Algebra
Requirements
Basic knowledge of Physics, Quantum Mechanics
Description
Course Title: Operator Algebra in Quantum Mechanics
Level: Advanced Undergraduate / Graduate
Prerequisites: Linear Algebra, Multivariable Calculus, and Introductory Quantum Mechanics
Course Overview
This course provides a rigorous mathematical and conceptual foundation in the operator algebra that governs quantum mechanics. In quantum theory, physical observables are represented by operators acting on a Hilbert space. This course bridges the gap between abstract linear algebra and practical quantum mechanics, focusing on the formulation, manipulation, and application of these operators. Students will develop the mathematical fluency required to solve advanced quantum mechanical systems and understand the foundational structure of modern physics.
Course Objectives
By the end of this course, students will be able to
Formulate physical observables as mathematical operators in Hilbert space.
Solve eigenvalue and eigenfunction problems for various quantum systems.
Master commutator algebra to determine simultaneous measurability and uncertainty relations.
Apply operator methods to angular momentum in both Cartesian and spherical polar coordinates.
Prove and utilize the properties of Hermitian operators in quantum proofs.
Detailed Syllabus & Lecture Modules
Module 1: Basics of Quantum Mechanics Operators
Introduction to Hilbert Space and Dirac notation (Bra-Ket formalism).
The concept of an operator: Mapping states to states.
Linear operators and their fundamental properties.
The position (x^) and momentum (p^) operators in the coordinate representation.
Physical interpretation of operators as observables.
Module 2: Types of Operators
Identity, Inverse, and Adjoint operators.
Hermitian Operators: Definition, self-adjointness, and their pivotal role in ensuring real expectation values.
Unitary Operators: Time-evolution and unitary transformations (preserving inner products).
Projection operators and identity resolution.
Parity and Ladder (raising/lowering) operators.
Module 3: Eigenvalue Calculations and Eigenfunctions
The quantum mechanical eigenvalue equation: A^∣ψ⟩=a∣ψ⟩.
Physical significance of eigenvalues (measurement outcomes) and eigenfunctions (stationary states).
Properties of Hermitian operator eigenvalues (reality proof) and eigenfunctions (orthogonality).
Degeneracy and its physical implications.
Expansion of arbitrary wavefunctions in terms of a complete set of eigenfunctions.
Module 4: Commutator Algebra
Definition of the commutator:[A^,B^]=A^B^−B^A^.
Algebraic properties and identities of commutators (distributivity, Jacobi identity).
Compatible vs. incompatible observables.
The generalized Uncertainty Principle and its derivation via commutator algebra.
Canonical commutation relations:[x^i,p^j]=iℏδij.
Module 5: Angular Momentum Operators & Spherical Polar Coordinates
Definition of orbital angular momentum L^=r^xp^.
Commutation relations for angular momentum components ([L^x,L^y]=iℏL^z).
Transformation of L^ from Cartesian toSpherical Polar Coordinates (r,θ,ϕ).
The Total Angular Momentum operator L^2 and its differential form.
Eigenvalues and eigenfunctions of L^2 and L^z (Spherical Harmonics, Ylm(θ,ϕ)).
Assessment Criteria
Problem Sets (30%): Weekly assignments focusing on operator proofs, commutator expansions, and coordinate transformations.
Midterm Examination (30%): Testing core concepts of Hermitian operators, eigenvalues, and commutator algebra.
Final Examination (40%): Comprehensive exam with a heavy emphasis on angular momentum operators and spherical coordinate applications.
Recommended Textbooks
Quantum Mechanics: Concepts and Applications - Nouredine Zettili
Introduction to Quantum Mechanics - David J. Griffiths
Principles of Quantum Mechanics - R. Shankar
Who this course is for
All Physics lovers, College students, Physics lovers
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