Mathematical Methods of Physics --- 466.001
Monday and Wednesday from 5:30
till
6:45 pm in room 184.
Here is the
current version of the
class notes. I often update these notes, so you might want to
print out just what you need rather than the whole 350 pages. For
those with sharp eyes who want to save paper, here
are the notes in a smaller font.
The class notes now have an index to
the first few chapters.
The grader is Travis McIntyre
(tpm@unm.edu).
No textbook is required for this
course, but there are some decent ones:
Mathematical
Methods for Physics and Engineering by K.
F. Riley, M.
P. Hobson, and S.
J. Bence (Cambridge Univ. Press),
A
Guided Tour of Mathematical Methods for the Physical Sciences by
Roel Snieder (Cambridge
Univ. Press), and
MATHEMATICAL
METHODS FOR PHYSICISTS (Academic
Press) by
Arfken; I prefer the later printings of the third edition.
First homework assignment: Do the
first eight problems at the end of chapter 1 of the on-line
notes. This
assignment is due on 17 September. Solutions.
Second homework
assignment: Do problem 1.9 and all five problems of chapter 3.
This
assignment is due on Wednesday, 8 October. Solutions.
Third homework
assignment: Do all the problems at the end of chapter 4 by
Monday, 27 October. Solutions.
Fourth homework
assignment: Do all the problems at the ends of chapters 5 and 6
by Wednesday 19 November. Solutions to the problems of chapters 5 and 6.
Fifth homework
assignment: Do all the problems at the end of chapter 8 by
Monday, 1 December.
Sixth homework
assignment: Do all the problems at the end of chapter 9 as well
as the last two problems of chapter 2 by the afternoon of the final
exam, which will be a lecture. I will add some problems on the
material of chapter 7.
Videos of lectures (these wmv files are big, so please download each
one to your computer before viewing it):
First lecture:
linear algebra up to linear independence.
Second lecture:
Dirac notation and determinants.
Third lecture:
eigenvectors and eigenvalues.
Fourth lecture:
hermitian and normal matrices, a matrix satisfies its characteristic
equation.
Fifth lecture:
the singular-value decomposition.
Sixth lecture:
SVD examples, tensor products, density operators, Fourier series.
Seventh lecture:
real and complex Fourier series on various intervals, examples.
Eighth lecture:
convergence and continuity of Fourier series, quantum-mechanical
examples.
Ninth lecture:
non-relativistic strings, periodic boundary conditions, Fourier
transforms, gaussians, derivatives of Fourier transforms.
Tenth lecture:
the diffusion equation and Fourier's solution, position and momentum
space in quantum mechanics.
Eleventh lecture:
convolutions and why they occur so often in physics.
The twelfth lecture on convolutions ,
Green's functions, and infinite series is unavailable because the hard
disk of the laptop failed.
Thirteenth lecture:
power, binomial, logarithmic, and asymptotic series; analytic
functions, Cauchy's integral theorem.
Fourteenth lecture:
Cauchy's integral formula, the Cauchy-Riemann conditions, alternative
proof of Cauchy's integral theorem, harmonic functions, Taylor series.
Fifteenth lecture:
Cauchy's inequality, Liouville's theorem, the fundamental theorem of
algebra, Laurent series.
Sixteenth lecture:
calculus of residues, examples of contour integration.
Seventeenth
lecture: logarithms and cuts, examples of contour
integration, Cauchy's principal value and related delta-function
identities.
Eighteenth lecture:
The Feynman propagator for neutral scalar fields, dispersion relations,
Hilbert transforms.
Nineteenth lecture:
Kramers-Kronig relations, conformal mapping, the method of steepest
descent, applications to string theory; basic facts about ordinary and
partial differential equations, separability of the laplacian in
various coordinate systems.
Twentieth lecture:
Wave equations and some of their solutions, fields of different spins
as solutions of wave equations, exact
and separable first-order
differential equations, integrating factors, examples, homogeneous
functions.
Twenty-first
lecture: The virial theorem, the general solution to a
first-order linear differential equation, examples, singular points of
second-order ordinary differential
equations.
Twenty-second
lecture: Hidden separability, exactness and integrability,
relation to the Cauchy-Riemann conditions, homogeneous first-order
ODEs, power-series method of Frobenius, even and odd differential
operators, parity, Fuch's theorem, Wronski's determinant, examples.
Twenty-third
lecture: The use of the wronskian to find a second solution,
why there aren't three solutions to a second-order linear, homogeneous
ODE, the self-adjoint form of a second-order
linear, homogeneous ODE, boundary conditions.
Twenty-fourth
lecture: Eigenfunctions and eigenvalues, the inequalities of
Bessel and Schwarz, Green's functions.
Twenty-fifth
lecture: Green's function for an ODE, Legendre polynomials,
recurrence relations, orthogonality, associated Legendre
polynomials, spherical harmonics, covariant and contravariant vectors.
The twenty-sixth lecture was not
recorded because a volunteer camera-man forgot to click on the record
icon. The subjects covered were: covariant
and contravariant vectors and fields, euclidean and Minkowski
spaces, special relativity, time dilation.
Twenty-seventh
lecture: special relativity: kinematics, dynamics, and
electrodynamics.
Lecture of
1 Dec 08: special
relativity, electrodynamics, tensors, adding tensors, tensor equations,
summation convention, contractions, symmetry of tensors, products of
tensors, the quotient rule, the metric tensor, the sphere, the
contravariant metric tensor, orthogonal coordinates in flat 3-space,
cylindrical and spherical coordinates, the gradient of a scalar field,
derivatives and affine connections.
Lecture of
3 Dec 08: covariant derivatives, covariant derivatives and
antisymmetry, affine connections and the metric tensor, covariant
derivative of the metric tensor, divergence of a contravariant vector,
the covariant laplacian, generally covariant equation of motion for a
charged particle in a gravitational and an electromagnetic field,
gravitational fields that are weak and static.