Why Group Theory? | p. 1 |
Finite Groups | p. 2 |
Groups and representations | p. 2 |
Example - Z[subscript 3] | p. 3 |
The regular representation | p. 4 |
Irreducible representations | p. 5 |
Transformation groups | p. 6 |
Application: parity in quantum mechanics | p. 7 |
Example: S[subscript 3] | p. 8 |
Example: addition of integers | p. 9 |
Useful theorems | p. 10 |
Subgroups | p. 11 |
Schur's lemma | p. 13 |
* Orthogonality relations | p. 17 |
Characters | p. 20 |
Eigenstates | p. 25 |
Tensor products | p. 26 |
Example of tensor products | p. 27 |
* Finding the normal modes | p. 29 |
* Symmetries of 2n+1-gons | p. 33 |
Permutation group on n objects | p. 34 |
Conjugacy classes | p. 35 |
Young tableaux | p. 37 |
Example -- our old friend S[subscript 3] | p. 38 |
Another example -- S[subscript 4] | p. 38 |
* Young tableaux and representations of S[subscript n] | p. 38 |
Lie Groups | p. 43 |
Generators | p. 43 |
Lie algebras | p. 45 |
The Jacobi identity | p. 47 |
The adjoint representation | p. 48 |
Simple algebras and groups | p. 51 |
States and operators | p. 52 |
Fun with exponentials | p. 53 |
SU(2) | p. 56 |
J[subscript 3] eigenstates | p. 56 |
Raising and lowering operators | p. 57 |
The standard notation | p. 60 |
Tensor products | p. 63 |
J[subscript 3] values add | p. 64 |
Tensor Operators | p. 68 |
Orbital angular momentum | p. 68 |
Using tensor operators | p. 69 |
The Wigner-Eckart theorem | p. 70 |
Example | p. 72 |
* Making tensor operators | p. 75 |
Products of operators | p. 77 |
Isospin | p. 79 |
Charge independence | p. 79 |
Creation operators | p. 80 |
Number operators | p. 82 |
Isospin generators | p. 82 |
Symmetry of tensor products | p. 83 |
The deuteron | p. 84 |
Superselection rules | p. 85 |
Other particles | p. 86 |
Approximate isospin symmetry | p. 88 |
Perturbation theory | p. 88 |
Roots and Weights | p. 90 |
Weights | p. 90 |
More on the adjoint representation | p. 91 |
Roots | p. 92 |
Raising and lowering | p. 93 |
Lots of SU(2)s | p. 93 |
Watch carefully - this is important! | p. 95 |
SU(3) | p. 98 |
The Gell-Mann matrices | p. 98 |
Weights and roots of SU(3) | p. 100 |
Simple Roots | p. 103 |
Positive weights | p. 103 |
Simple roots | p. 105 |
Constructing the algebra | p. 108 |
Dynkin diagrams | p. 111 |
Example: G[subscript 2] | p. 112 |
The roots of G[subscript 2] | p. 112 |
The Cartan matrix | p. 114 |
Finding all the roots | p. 115 |
The SU(2)s | p. 117 |
Constructing the G[subscript 2] algebra | p. 118 |
Another example: the algebra C[subscript 3] | p. 120 |
Fundamental weights | p. 121 |
The trace of a generator | p. 123 |
More SU(3) | p. 125 |
Fundamental representations of SU(3) | p. 125 |
Constructing the states | p. 127 |
The Weyl group | p. 130 |
Complex conjugation | p. 131 |
Examples of other representations | p. 132 |
Tensor Methods | p. 138 |
Lower and upper indices | p. 138 |
Tensor components and wave functions | p. 139 |
Irreducible representations and symmetry | p. 140 |
Invariant tensors | p. 141 |
Clebsch-Gordan decomposition | p. 141 |
Triality | p. 143 |
Matrix elements and operators | p. 143 |
Normalization | p. 144 |
Tensor operators | p. 145 |
The dimension of (n,m) | p. 145 |
* The weights of (n,m) | p. 146 |
Generalization of Wigner-Eckart | p. 152 |
* Tensors for SU(2) | p. 154 |
* Clebsch-Gordan coefficients from tensors | p. 156 |
* Spin s[subscript 1] + s[subscript 2] - 1 | p. 157 |
* Spin s[subscript 1] + s[subscript 2] - k | p. 160 |
Hypercharge and Strangeness | p. 166 |
The eight-fold way | p. 166 |
The Gell-Mann Okubo formula | p. 169 |
Hadron resonances | p. 173 |
Quarks | p. 174 |
Young Tableaux | p. 178 |
Raising the indices | p. 178 |
Clebsch-Gordan decomposition | p. 180 |
SU(3) [right arrow] SU(2) [times] U(1) | p. 183 |
SU(N) | p. 187 |
Generalized Gell-Mann matrices | p. 187 |
SU(N) tensors | p. 190 |
Dimensions | p. 193 |
Complex representations | p. 194 |
SU(N) [multiply sign in circle] SU(M) [set membership] SU(N +M) | p. 195 |
3-D Harmonic Oscillator | p. 198 |
Raising and lowering operators | p. 198 |
Angular momentum | p. 200 |
A more complicated example | p. 200 |
SU(6) and the Quark Model | p. 205 |
Including the spin | p. 205 |
SU(N) [multiply sign in circle] SU(M) [set membership] SU(NM) | p. 206 |
The baryon states | p. 208 |
Magnetic moments | p. 210 |
Color | p. 214 |
Colored quarks | p. 214 |
Quantum Chromodynamics | p. 218 |
Heavy quarks | p. 219 |
Flavor SU(4) is useless! | p. 219 |
Constituent Quarks | p. 221 |
The nonrelativistic limit | p. 221 |
Unified Theories and SU(5) | p. 225 |
Grand unification | p. 225 |
Parity violation, helicity and handedness | p. 226 |
Spontaneously broken symmetry | p. 228 |
Physics of spontaneous symmetry breaking | p. 229 |
Is the Higgs real? | p. 230 |
Unification and SU(5) | p. 231 |
Breaking SU(5) | p. 234 |
Proton decay | p. 235 |
The Classical Groups | p. 237 |
The SO(2n) algebras | p. 237 |
The SO(2n + 1) algebras | p. 238 |
The Sp(2n) algebras | p. 239 |
Quaternions | p. 240 |
The Classification Theorem | p. 244 |
II-systems | p. 244 |
Regular subalgebras | p. 251 |
Other Subalgebras | p. 253 |
SO(2n + 1) and Spinors | p. 255 |
Fundamental weight of SO(2n + 1) | p. 255 |
Real and pseudo-real | p. 259 |
Real representations | p. 261 |
Pseudo-real representations | p. 262 |
R is an invariant tensor | p. 262 |
The explicit form for R | p. 262 |
SO(2n + 2) Spinors | p. 265 |
Fundamental weights of SO(2n + 2) | p. 265 |
SU(n) [subset or is implied by] SO(2n) | p. 270 |
Clifford algebras | p. 270 |
[Gamma][subscript m] and R as invariant tensors | p. 272 |
Products of [Gamma][subscript s] | p. 274 |
Self-duality | p. 277 |
Example: SO(10) | p. 279 |
The SU(n) subalgebra | p. 279 |
SO(10) | p. 282 |
SO(10) and SU(4) [times] SU(2) [times] SU(2) | p. 282 |
* Spontaneous breaking of SO(10) | p. 285 |
* Breaking SO(10) [right arrow] SU(5) | p. 285 |
* Breaking SO(10) [right arrow] SU(3) [times] SU(2) [times] U(1) | p. 287 |
* Breaking SO(10) [right arrow] SU(3) [times] U(1) | p. 289 |
* Lepton number as a fourth color | p. 289 |
Automorphisms | p. 291 |
Outer automorphisms | p. 291 |
Fun with SO(8) | p. 293 |
Sp(2n) | p. 297 |
Weights of SU(n) | p. 297 |
Tensors for Sp(2n) | p. 299 |
Odds and Ends | p. 302 |
Exceptional algebras and octonians | p. 302 |
E[subscript 6] unification | p. 304 |
Breaking E[subscript 6] | p. 308 |
SU(3) [times] SU(3) [times] SU(3) unification | p. 308 |
Anomalies | p. 309 |
Epilogue | p. 311 |
Index | p. 312 |
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