INDEX 303 Mechanics, quantum. See Quantum theory Metric tensor, 3 Metrics conformally fl at, 90 defi ned, 2–3 describing distance measurements with, 23 Euclidean, 93 fi ducial, 59 induced, 30–31 Kasner, 268–273 Minkowski, 23, 40, 60, 144 Robertson-Walker, 266 Schwarzschild, 242 signature of, 23 transforming worldsheet currents to fl at, 59–63 Minkowski metric, 23, 40, 60, 144 Möbius strip, 37f Möbius transformation, 102 Mode expansions closed string, 142–143 open string, 141–142 overview, 140 Modifi ed mass spectrum, 155–158 Momentum density, 66 Momentum mode, 155 Motion. See Equations of motion M-theory, 15, 192, 258–260 Multiple D-branes, 230–234 Muons, 17 N Naked singularity, 244 Nambu-Goldstone bosons, 230 Nambu-Goto action, 32 Negative mass, 81 Neumann boundary conditions equations of motion for string, 33 open strings with free endpoints, 44–45 space-time arena, 223 and T-duality, 164 Neveau-Schwarz (NS) boundary conditions, 141, 145, 195–196, 198–200 Nilpotent of degree two, 117 NN coordinates, 224 Noether currents, 63–66 Noether’s theorem, 53–55, 137 No-ghost theorem, 125 Nonabelian gauge theory, 208 Non-euclidean geometry, 2–3 Normal ordering, 78, 108 NS (Neveau-Schwarz) boundary conditions, 141, 145, 195– 196, 198–200 Nuclear particle interactions, 8 Null states, 119 Number operators, 76 O One-dimensional strings, 10f OPE (operator product expansion), 110–113 Open strings in bosonic string theory, 188–189 boundary conditions, 32–33, 141, 224f commutation relations for, 75 defi ned, 13f with fi xed endpoints, 47–48 with free endpoints, 44–46 modal expansion, 141–142, 225 RNS superstrings, 147–148 spectrum, 75–82 T-duality and, 162–164 Operator product expansion (OPE), 110–113 Operators BRST quantization, 116–118 fermion number, 148 ghost number, 117 Klein, 149 lowering, 78 parity, 148–149 raising, 78 string quantization, 76 super-Virasoro NS sector algebra, 145 overview, 143–144 R sector algebra, 146–147 total number, 77, 197 Virasoro, 78, 80, 155–156 Opposite chirality, 201 Oriented strings, 188–189 Outer horizon, 244 P Parity operators, 148–149 Particles classes of, 127 distinct, 156 families of, 17 heterotic string theory, 215 interactions of, 6f, 8 point, 10f, 13f, 165, 176–179 and postulated super-partners, 190t quantum fi eld theory versus string theory, 10f in quantum theory, 4–6 relativistic point, 22–28, 176 in string theory, 12–14 Pauli exclusion principle, 5 p-brane, 15 Penrose, Roger, 244 Periodic bosons, 213 Periodic fermions, 213 Periodic sector P, 209–210 Perturbative expansion, 6 Photon, 7f, 229 Physical states, 118–119 Planck length, 11–12, 250 Planck mass, 12 Planck scale, 13 Planck time, 12 Poincaré invariance, 63–66 Poincaré transformations, 56–57
304 <strong>String</strong> <strong>Theory</strong> Demystifi ed Point particles, 10f, 13f, 165, 176–179 Poisson brackets, 49 Polyakov action light-cone coordinates, 42 overview, 36 symmetries of overview, 53–56 Poincaré transformations, 56–57 reparameterizations, 57–58 Weyl transformations, 58–59 Potential, 235f Primary fi elds, 110 Propagators, 107 Q QCD (quantum chromodynamics), 231 Quanta, 5 Quantization BRST invariant states, 118–120 no-ghost theorem, 125 operators, 116–118 overview, 115 in string theory-CFT, 120–121 transformations, 121–125 canonical, 144, 184–185 covariant advantages of, 115 closed string spectrum, 82–85 commutation relations, 74–75 open string spectrum, 75–82 overview, 70–73 D-branes, 225–230 fi rst, 69 heterotic SO(32) string theory, 209–214 light-cone, 85–87, 115 overview, 69 second, 69 Quantized momentum, 216–219 Quantum chromodynamics (QCD), 231 Quantum fi eld theory, 5–8, 10f Quantum of gravitational fi eld, 8–10 Quantum theory basics of, 3–8 overview, 1–2 Quark, 231 R R (Ramond) boundary conditions, 141, 146–147, 195–198 Radial ordering, 111 Radiation, 240 Radion fi eld, 275 Raising operators, 78 Ramond (R) boundary conditions, 141, 146–147, 195–198 Ramond-Neveu-Schwarz (RNS) superstrings boundary conditions closed string, 142 open string, 141 overview, 140 canonical quantization, 144 conserved currents, 133–136 critical dimension, 149–150 energy-momentum tensor, 136–139 GSO projection, 148–149 Majorana spinors, 130–132 mode expansions closed string, 142–143 open string, 141–142 overview, 140 open string spectrum, 147–148 overview, 127–129 supersymmetry transformations on worldsheet, 132–133 super-Virasoro operators NS sector algebra, 145 overview, 143–144 R sector algebra, 146–147 Randall, Lisa, 273 Randall-Sundrum model, 273–275 Reissner-Nordström black holes, 243 Relativistic point particles, 22–28, 176 Renormalization, 8 Reparameterizations, 57–58 Rescaling, Weyl, 58–59 Ricci tensor, 241 Riemann curvature tensor, 241 Right moving antiholomorphic functions, 97 Right-moving sector, 197, 207, 209 Ripples, brane, 276 RNS (Ramond-Neveu-Schwarz) superstrings boundary conditions closed string, 142 open string, 141 overview, 140 canonical quantization, 144 conserved currents, 133–136 critical dimension, 149–150 energy-momentum tensor, 136–139 GSO projection, 148–149 Majorana spinors, 130–132 mode expansions closed string, 142–143 open string, 141–142 overview, 140 open string spectrum, 147–148 overview, 127–129 supersymmetry transformations on worldsheet, 132–133 super-Virasoro operators NS sector algebra, 145 overview, 143–144 R sector algebra, 146–147 Robertson-Walker metric, 266 S Scale factor, 266 Scale invariant, 91 Scale transformation, 91–92 Schrödinger’s equation, 4 Schwarzschild black hole, 247
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Accounting Demystified Advanced Cal
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Contents vii BRST in String Theory-
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Contents ix CHAPTER 14 Black Holes
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PREFACE String theory is the greate
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CHAPTER 1 Introduction General rela
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CHAPTER 2 The Classical String I: E
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CHAPTER 3 Symmetries and Worldsheet
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CHAPTER 6 BRST Quantization 123 To
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CHAPTER 7 RNS Superstrings The real
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CHAPTER 7 RNS Superstrings 129 EXAM
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CHAPTER 8 Compactifi cation and T-D
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CHAPTER 10 A Summary of Superstring
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CHAPTER 13 D-Branes One of the most
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CHAPTER 14 Black Holes Black holes,
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