INDEX 305 Schwarzschild metric, 242 Schwarzschild radius, 250 Second quantization, 69 Sectors, 141. See also individual sectors by name Signatures of metrics, 23 Singularities, 241 SO(32) heterotic string theory action for, 208–209 overview, 192 quantization of, 209–214 Space-fi lling branes, 221 Space-time arena, 223–224 Space-time bosons, 143, 199–200 Space-time fermions, 143, 200 Space-time supersymmetry, 175–176, 180 Space-time translation, 56–57 Spatial dimensions in bosonic string theory, 188 Special conformal transformations, 99 Spin-1 gauge bosons, 8 Spin-1/2 fermions, 8 Spin-2 bosons, 8–9 Spinor index, 177 Splitting strings, 14 Standard model, 8 Standing waves on string, 45 Stress-energy tensor, 3, 52, 106, 136–139 <strong>String</strong> coordinates, 30 <strong>String</strong> quantization covariant closed string spectrum, 82–85 commutation relations for closed string, 74–75 commutation relations for open string, 75 open string spectrum, 75–82 overview, 70–73 light-cone, 85–87 overview, 69 <strong>String</strong> sigma model action defi ned, 36 light-cone coordinates, 42 symmetries of overview, 53–56 Poincaré transformations, 56–57 reparameterizations, 57–58 Weyl transformations, 58–59 <strong>String</strong> theory. See also individual types of string theory by name; Superstring theory basic analysis in, 10–11 BRST quantization in, 120–121 conformal fi eld theory in, 92–93 D-branes, 15–16 fundamental constants, 11–12 general relativity, 2–3 higher dimensions, 16–17 M-theory, 15 overview, 1–2, 12–14 quantizing gravitational fi eld, 8–10 quantum theory, 3–8 standard model, 8 types of, 14–15 unifi cation, 11–12 <strong>String</strong>s in space-time, 28–32 Strong particle interactions, 8 Structure constants, 116 Sundrum, Raman, 273 Super Yang-Mills (SYM) theory, 257, 259–261 Supercharge, 169 Supercovariant derivative, 171 Supercurrents, 138 Superfi elds overview, 168–171 for worldsheet supersymmetry, 171–173 Super-partners, 190 Super-Poincaré group, 178 Superspace, 168–171 Superstring theory. See also RNS superstrings; Type II A string theory; Type II B string theory bosonic string theory, 188–189 canonical quantization, 184–185 D-branes in, 230 dualities, 192–193 Grassman integration, 173–174 Green-Schwarz action, 175–179 heterotic E 8 × E 8 , 192 heterotic SO(32), 192 light-cone gauge, 181–184 overview, 167–168, 187–188, 190–191 space-time supersymmetry, 180 superfi elds overview, 168–171 for worldsheet supersymmetry, 171–173 superspace, 168–171 supersymmetric action, 174–175 type I, 14, 191 Supersymmetry (SUSY) defi ned, 127 point particle, 176–179 space-time, 180 supersymmetric actions, 174–175 transformations, 132–133, 172–173 ways to describe, 210 Supersymmetry generator, 169 Super-Virasoro operators NS sector algebra, 145 overview, 143–144 R sector algebra, 146–147 Susskind, Leonard, 256 SUSY (supersymmetry) defi ned, 127 point particle, 176–179 space-time, 180 supersymmetric actions, 174–175 transformations, 132–133, 172–173 ways to describe, 210 SYM (Super Yang-Mills) theory, 257, 259–261 Symmetries. See also Worldsheet currents energy-momentum tensor, 52–53 hamiltonian, 67 overview, 51 of Polyakov action overview, 53–56
306 <strong>String</strong> <strong>Theory</strong> Demystifi ed Symmetries, of Polyakov action (Cont.): Poincaré transformations, 56–57 reparameterizations, 57–58 Weyl transformations, 58–59 Symmetry breaking, 17 T Tachyons D-brane decay and, 235–237 ground state of bosonic string theory, 81–82 GSO projection, 148 Taus, 17 Taylor expansion, 171–172 T-duality for closed strings, 159–161 D-branes, 164–165 open strings and, 162–164 overview, 192–193 Temperature of black holes, 247–248 ekpyrotic, 276 Tensors. See individual tensors by name Thermodynamics, 246 T’Hooft, Gerard, 256 Three-dimensional branes, 16 Topology, 17 Torus surface, 37f Total number operators, 77, 197 Trace, calculating for energy-momentum tensor, 52–53 Transformations BRST, 121–125 conformal, 90, 98–100 Möbius, 102 Poincaré conserved currents from, 63–66 overview, 56–57 scale, 91–92 special conformal, 99 supersymmetry, 132–133 Weyl, 58–59 Two-dimensional conformal group, 100–104 Two-component Majorana spinors, 130 Two-dimensional conformal fi eld theories, 90 Two-point function, 107 Type I string theory, 14, 191 Type II A string theory defi ned, 15, 191 massless spectrum of different sectors, 203–204 NS sectors, 195–196, 198–200 overview, 201–202 R sectors, 195–198 spin fi eld, 200–201 Type II B string theory defi ned, 15, 191 massless spectrum of different sectors, 203–204 NS sectors, 195–196, 198–200 overview, 203 R sectors, 195–198 spin fi eld, 200–201 U Uncertainty principle, 4, 9 Unifi cation, 11–12 Unoriented strings, 188–189 Uppercase letters in coordinates, 22 V Vacuum fi eld equations, 241 Vanishing Euler characteristic, 37 Vibration of strings, 14, 92–93 Virasoro algebra with central extension, 80, 104 Virasoro constraints, 78 Virasoro operators, 78, 80, 155–156 Virtual processes, 7 Visible branes, 273 Volume elements, 96 W Warp factor, 274 Wave equation solutions, 43–44 Wave function, 4–5 Weak particle interactions, 8 Weyl spinors, 149 Weyl transformations, 58–59 Wick expansion, 107–110 Wick rotations, 93 Winding contribution, 47 Winding mode, 154 Winding number, 47, 154 Winding states, 154 Witten algebra, 104 World line for point particle, 13f Worldsheet currents conserved currents from Poincaré invariance, 63–66 energy-momentum tensor, 52–53 hamiltonian, 67 overview, 51 supersymmetry transformations on, 132–133 symmetries of Polyakov action overview, 53–56 Poincaré transformations, 56–57 reparameterizations, 57–58 Weyl transformations, 58–59 transforming to fl at metric, 59–63 Worldsheet supersymmetry, 171–173 Worldsheet for closed strings, 13f, 29f, 106f World-volume, 222 Y Yang-Mills theory, 231, 257, 259–261 Z z plane, mapping world sheet of closed string to, 106f Zero-dimensional objects, 28–29 Zero modes of ghost states, 124 Zeroth law, 246 Zeroth mode, 233
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PREFACE String theory is the greate
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CHAPTER 1 Introduction General rela
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CHAPTER 7 RNS Superstrings The real
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