Physics 253b Assignment #1-2 updated February 8, 2010 This is what I hope will be an easy a followup on last weeks problem that will get you thinking about the background field method. Do the that last part using the background field method and look at th
Physics 253b Assignment #1 updated January 28, 2010 I like a lot of feedback on my courses, and that goes for the problem sets. So if you see something that doesn't make sense here, or the reading makes no sense, or you have any other issues, drop me an e
Changes for 2010
The biggest change for 2010 is that is looks like we will not have a graduate student doing sections and helping with assignments. I will do everything myself. I hope to make other changes that will make the assignments more fun and a lit
Unparticle self-interactions
Howard Georgi,1 Yevgeny Kats,2 Center for the Fundamental Laws of Nature Jefferson Physical Laboratory Harvard University Cambridge, MA 02138
arXiv:0904.1962v3 [hep-ph] 23 Jan 2010
Abstract We develop techniques for studying t
updated Thursday 8th April, 2010 23:25
Standard model - SU (2) U (1) U (1) - = 2
0 1
- L(, W ) =
1 1 1 D D - V () - Wa Wa = tr D D - V () - Wa Wa 4 4 4 0 + = - 0 2 1 3 = i T + i S = i + i = i - i 2 2 2 2 1 3 D = + ig W + ig X D = + ig W - ig X 2 2 2 2 Wa
updated Thursday 25th March, 2010 09:54
1 L = (i D q - q Mq q) - G Ga - (v + a 5 ) q q q 4 a quark field q vector D = + igTa G igTa G = [D , D ] a a in 3D color space is "covariant G is "gluon a + 6D flavor space derivative" fieldstrength" Ta 3 3 traceles
updated Tuesday 23rd March, 2010 06:10
5. spontaneous symmetry breaking and Goldstone bosons (a) the linear -model (b) the non-linear -model (c) SU (2) SU (2) and SU (3) SU (3) effective chiral theory (d) accidental symmetry and the Coleman-Weinberg poten
updated Tuesday 2nd March, 2010 11:29
4. symmetries, currents and the effective field theory of the weak interactions (a) Strong interactions are complicated (b) Gell-Mann's SU (3) - symmetry (c) non-Abelian flavor symmetries and QFT Lagrangians (d) Noeth
updated Thursday 17th February, 2011 11:41
3. tools for going beyond perturbation theory (a) effective field theory, the renormalization group and running (b) qualitative properties of QCD (c) composite operators and the operator product expansion (d) cut
updated Tuesday 8th February, 2011 11:54
2. the muon anomalous magnetic moment and large logs (a) muon anomalous magnetic moment (b) vacuum polarization corrections to g (c) dimensional regularization and M S (d) large logs in g
electron g - 2 - one of th
updated Wednesday 2nd February, 2011 11:53
Model #1 - Electrodynamics with a light pseudoscalar, , mass
2 (i - e A - m) - 1 F F + 1 - 2 - 4 - if 5 L= 4 2 2 4!
renormalizable quantum field theory - all couplings have zero or positive mass dimension no cou
5
1
2 1 0 1
2 1
1
Here is a Feynman graph. When you first latex this file, latex t0-example you will get a cheery note saying feynmp: File examplegraph.1 not found: feynmp: Process examplegraph.mp with MetaPost and then reprocess this file. feynmf: Label
253b Actual Syllabus
Physics 253b is a continuation of Physics 253a. Below is a very preliminary syllabus. I have not taught this course in many years, so I am starting over from scratch, and I am sure that a lot of these items will evolve as we go along.
#HUTP-93/A003 1/93
Effective Field Theory
Howard Georgi Lyman Laboratory of Physics Harvard University Cambridge, MA 02138
Research supported in part by the National Science Foundation under Grant #PHY-8714654. Research supported in part by the Texas Na
Vol. 813 (1982)
ACTA PHYSICA POLONICA
No 1-2
INTRODUCTION TO THE BACKGROUND FIELD METHOD*
By L. F. ABBoTT*
CERN, Geneva
(Received July 20, 1981)
The background field approach to calculations in gauge field theories is presented. Conventional functional te
Physics 253b Assignment #8 updated Monday 19th April, 2010, 07:25 Do the problem below. Make sure that you follow the rules of coherence. Typeset your A solution in LTEX file, zip your latex file and any nonstandard input files and/or packages necessary t
Physics 253b Assignment #7 updated Tuesday 30th March, 2010, 10:05
7-1.
Consider a non-abelian gauge theory with the following really stupid gauge fixing term: Ka ( + ) G a (7-1.1)
where is a fixed 4-vector and the Ka are auxialliary field. This combines
Physics 253b Assignment #6 updated Thursday 25th March, 2010, 10:28
6-1. Use the anomaly term to calculate the decay rates for 0 and . You result will depend on the decay constant f , which can be independently determined in various other ways. But just f
Physics 253b Assignment #5 updated Tuesday 9th March, 2010, 07:26 I'm working on adding another short problem - but start with this. 5-1. In the chiral Lagrangian L = f2 1 f2 tr D U D U + tr (U M + h.c.) + tr(U QU Q) + 4 2 (5-1.1)
as discussed in lecture,
Physics 253b Assignment #4 updated Monday 1st March, 2010, 09:35 I like problems involving imaginary worlds. Here is one. It should be very straightforward (probably too much so) once you understand what I am talking about. As always, please email with qu
Physics 253b Assignment #3 updated Tuesday 23rd February, 2010, 11:22 This should be a straightforward exercise generalizing the K ll n-Lehmann representation. As a e always, please email with questions. We will discuss due date and what-not in class. 3-1
Physics 253b Assignment #2 updated Sunday 14th February, 2010, 08:39 As usual, I would rather have you talk to me than read a text book. But if you want inspiration, you might want to read sections I-9, III-1, III-2, III-3 and the first few pages of VI-8