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DBI Analysis of Open String Bound States on Non-compact D-branes

DBI Analysis of Open String Bound States on Non-compact D-branes

DBI Analysis of Open String Bound States on Non-compact D-branes

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C<strong>on</strong>tentsAcknowledgements 1Samenvatting 2I General Introducti<strong>on</strong> 31 Introducti<strong>on</strong> 41.1 <str<strong>on</strong>g>String</str<strong>on</strong>g> theory in a nutshell . . . . . . . . . . . . . . . . . . . . . . . . . . 41.2 A brief history <str<strong>on</strong>g>of</str<strong>on</strong>g> string theory . . . . . . . . . . . . . . . . . . . . . . . 61.3 Guideline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8II Theoretical Introducti<strong>on</strong> 112 Bos<strong>on</strong>ic <str<strong>on</strong>g>String</str<strong>on</strong>g>s 122.1 Acti<strong>on</strong> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.2 Symmetries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.3 Equati<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> moti<strong>on</strong> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.4 <str<strong>on</strong>g>Bound</str<strong>on</strong>g>ary c<strong>on</strong>diti<strong>on</strong>s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.4.1 Closed strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.4.2 <str<strong>on</strong>g>Open</str<strong>on</strong>g> strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.5 Soluti<strong>on</strong>s and expansi<strong>on</strong>s . . . . . . . . . . . . . . . . . . . . . . . . . . 172.5.1 Closed string expansi<strong>on</strong> . . . . . . . . . . . . . . . . . . . . . . . 192.5.2 <str<strong>on</strong>g>Open</str<strong>on</strong>g> string expansi<strong>on</strong> . . . . . . . . . . . . . . . . . . . . . . . . 202.6 Quantizati<strong>on</strong> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212.6.1 Covariant approach . . . . . . . . . . . . . . . . . . . . . . . . . 212.6.2 Energy-momentum tensor and Hamilt<strong>on</strong>ian . . . . . . . . . . . . 232.6.3 Virasoro algebra and physical states . . . . . . . . . . . . . . . . 272.6.4 Light-c<strong>on</strong>e gauge quantizati<strong>on</strong> and spectrum . . . . . . . . . . . 292.7 Oriented vs. unoriented strings . . . . . . . . . . . . . . . . . . . . . . . 362.8 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37i

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