# 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).

### Offering and execution

Course offering missing for current semester as well as for previous and coming semesters

## Course information

### Content and learning outcomes

#### Course contents *

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.

#### 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 Disposition

No information inserted

### Literature and preparations

#### Specific prerequisites *

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.

#### Recommended prerequisites

No information inserted

#### Equipment

No information inserted

#### 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 and completion

If the course is discontinued, students may request to be examined during the following two academic years.

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

#### Examination *

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

Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.

The examiner may apply another examination format when re-examining individual students.

#### Other 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.

#### Opportunity to complete the requirements via supplementary examination

No information inserted

#### Opportunity to raise an approved grade via renewed examination

No information inserted

#### Ethical approach *

• All members of a group are responsible for the group's work.
• In any assessment, every student shall honestly disclose any help received and sources used.
• In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.

### Further information

#### Course web

Further information about the course can be found on the Course web at the link below. Information on the Course web will later be moved to this site.

Course web SI1140

#### Main field of study *

Physics, Technology

First cycle