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1 ÐòÂÛ1
1.1 µ¥Î»ÖÆ¡¢¶È¹æ¼°³£Ó÷ûºÅ. . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 ¹ãÒå×ø±ê¡¢Ï໥×÷ÓÃÔ­Àí¡¢¹²éÁ¿¼°Ô˶¯·½³Ì. . . . . . . . . . . . . 5
1.3 гÕñ×ÓÁ¿×Ó»¯. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 ³¡¼°¶Ô³ÆÐÔ11
2.1 ¶¨Óò³¡¼°ÆäÔ˶¯·½³Ì. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 ÅµÌØ¶¨ÀíÓëÊØºã¶¨ÂÉ£¨Noether's Theorem and Conservation Laws£© . . 14
2.3 ³¡µÄ¹þÃܶÙÐÎʽ£¨The Hamilton Formalism£© . . . . . . . . . . . . . . . 19
3 ³¡µÄÕýÔòÁ¿×Ó»¯23
3.1 ¿ËÀ³Òð-¸êµÇ£¨Klein-Gorden£©³¡¼°ÆäÁ¿×Ó»¯. . . . . . . . . . . . . . . . 23
3.1.1 ʵ±êÁ¿³¡. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.1.2 ¸´±êÁ¿³¡. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.2 µÒÀ­¿Ë³¡. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2.1 µÒÀ­¿Ë·½³Ì(Dirac Equation)µÄ½¨Á¢. . . . . . . . . . . . . . . . . 35
3.2.2 ¸ºÄܽâÓëµÒÀ­¿Ë¿ÕѨÀíÂÛ£¨Dirac hole£© . . . . . . . . . . . . . . 45
3.2.3 ×ÔÓÉÁ£×ӵį½Ã沨½âºÍͶӰËã·û. . . . . . . . . . . . . . . . . . 45
3.2.4 ÐýÁ¿³¡µÄÁ¿×Ó»¯. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
3.2.5 Íâ¶ûÐýÁ¿£¨Weyl Spinors £© . . . . . . . . . . . . . . . . . . . . . 54
3.3 µç´Å³¡¼°ÆäÁ¿×Ó»¯. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
3.3.1 Âó¿Ë˹Τ·½³Ì×é. . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3.3.2 µç´Å³¡µÄÁ¿×Ó»¯. . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
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3.3.3 µç´Å³¡ÔÚ¶¯Á¿±íÏóÖеÄÕ¹¿ª. . . . . . . . . . . . . . . . . . . . . 61
3.4 C,P,T ±ä»»ÓëCPT ¶¨Àí. . . . . . . . . . . . . . . . . . . . . . . . . . . 66
3.4.1 Óî³Æ±ä»». . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
3.4.2 µçºÉ¹²éî±ä»». . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.4.3 ʱ¼ä·´ÑÝ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
3.4.4 CPT¶¨Àí. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
4 Ï໥×÷Óó¡ºÍ΢ÈÅÂÛ73
4.1 Á£×Ó³¡µÄµç´ÅÏ໥×÷ÓÃ. . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
4.2 ʱ¼äÑÝ»¯Ëã·ûÓë΢ÈÅÕ¹¿ª£¨pertubative expansion£© . . . . . . . . . . . . 75
4.3 Íþ¿Ë¶¨Àí£¨Wick's Theorem£© . . . . . . . . . . . . . . . . . . . . . . . . 80
4.4 ·ÑÂüͼ£¨Feynman Diagram£©Óë·ÑÂü¹æÔò£¨Feynman Rules£© . . . . . . 82
5 É¢Éä½ØÃæÓëË¥±ä¿í¶È
£¨Scattering Cross Section & Decay Width£© 91
5.1 É¢Éä½ØÃæÓë¿í¶ÈµÄ»ù±¾¹«Ê½. . . . . . . . . . . . . . . . . . . . . . . . . 91
5.2 µç´ÅÉ¢Éä¹ý³Ì£¨Electromagnetic Scattering Processes£© . . . . . . . . . . 95
5.3 Ë¥±ä¹ý³Ì¾ÙÀý. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
5.4 ·¨À×£¨Furry£©¶¨Àí. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
6 ·øÉäÐÞÕý£¨Radiative Corrections£©ºÍÖØÕû»¯ÀíÂÛ¼ò½é£¨General Introduc-
tion to Renormalization£© 105
6.1 Õæ¿Õ¼«»¯£¨Vacuum Polarization£© . . . . . . . . . . . . . . . . . . . . . 105
6.2 ¶þ½×µç×Ó×ÔÄܺÍÈý½×µç´Å¶¥½Ç. . . . . . . . . . . . . . . . . . . . . . . . 111
6.3 Ward Identily ºÍQED µ¥È¦ÖØÕû»¯. . . . . . . . . . . . . . . . . . . . . . 115
6.4 QED·¢É¢Í¼ÐεÄÒ»°ã·ÖÎö. . . . . . . . . . . . . . . . . . . . . . . . . . 117
A ¸½Â¼119
A.1 ·ûºÅºÍÔ¼¶¨. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
A.2 ¡ã¾ØÕóµÄÐÔÖÊ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
A.3 ³£ÓõÄÇó¼£¹«Ê½. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
A.4 ÐýÁ¿¹«Ê½. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
A.5 ±êÁ¿³¡µÄÈý¶¯Á¿. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
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