# SI1140 Mathematical Methods in Physics 9.0 credits

## Fysikens matematiska metoder

Vector and tensor analysis (Part 1) and partial different equations with their applications in physics (Part 2).

#### Education cycle

First cycle#### Main field of study

Physics

Technology

#### Grading scale

A, B, C, D, E, FX, F

At present this course is not scheduled to be offered.

## Intended learning outcomes

After completing the course, a student should be able to

Part 1 (TENA):

- Use vector analysis to describe and analyse physical systems
- Model and formulate basic problems in physics within, e.g., electromagnetism and fluid mechanics, using vector analysis
- Describe different physical situations where singular vector fields appear and use these to describe physical systems
- Apply tensor analysis on basic problems in physics within, e.g., solid mechanics
- Use symmetries and basic group theory to draw conclusions regarding physical systems

Part 2 (TENB+INLA):

- Formulate problems in terms of partial differential equations starting from basic physical questions
- Numerically model and solve physical problems described by partial differential equations
- Use expansion in eigenfunctions as a tool for solving problems that appear in, e.g., quantum mechanics and electromagnetism
- Define and in basic cases apply Green’s functions to physical problems, e.g., diffusion and wave propagation
- Analyse physical problems using variational principles and energy arguments

## Course main content

**Vector analysis (Part 1):**

Concepts within vector analysis and their physical applications: the nabla operator, integral theorems, and potential theory. Tensors with applications from, e.g., electrodynamics and continuum mechanics. Special vector fields and their importance within physical modelling. Modelling using vector analysis. Symmetry concepts with relation to basic group theory and their significance in physics.

**Partial differential equations (Part 2):**

Physical problems leading to different types of differential equations, e.g., the wave equation, Laplace’ equation, and Poisson’s equation. Numerical solutions to physical problems. Separation of variables in cartesian, cylinder, and spherical coordinates, resulting in special functions, e.g., Bessel functions, Legendre polynomials, and spherical harmonics. Basic theory and application of Green’s functions in physics. Variational calculus and physical modelling using energy principles. Relation between analytical methods and finite difference/element methods.

## Eligibility

Recommended prerequisites: In order to assimilate the course material, it is recommended that the students have taken the following courses or have acquired the corresponding knowledge in a different manner:

- SF1602
- SF1603
- SF1604

For part 2, the course SF1629 is also recommended.

## Literature

The course literature is decided by the Department of Theoretical Physics and announced through the course homepage at least four weeks before the start of each part.

## Examination

- INLA - Handin Assignment Part 2, 1.0, grading scale: P, F
- TENA - Written Examination Part 1, 4.0, grading scale: A, B, C, D, E, FX, F
- TENB - Written Examination Part 2, 4.0, grading scale: A, B, C, D, E, FX, F

## Requirements for final grade

At least grade E in both exams (TENA and TENB) as well as passing the hand in assignment (INLA). The exams should normally be written exams.

## Offered by

SCI/Undergraduate Physics

## Contact

Edwin Langmann (langmann@kth.se)

## Examiner

Edwin Langmann <langmann@kth.se>

## Add-on studies

SI2170 Quantum Physics

SI2380 Advanced Quantum Mechanics

SI2360 Analytical Mechanics and Classical Field Theory

SI2371 Relativity Theory

SI1142 Mathematical Methods in Physics, supplementary course

## Version

Course syllabus valid from: Autumn 2015.

Examination information valid from: Autumn 2015.