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Scarica la tesi Integrale di Feynman sui Cammini e Processi Stocastici

Scarica la tesi Integrale di Feynman sui Cammini e Processi Stocastici

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In<strong>di</strong>ce<br />

0.1 Introduzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1<br />

0.2 Derivazione dell’<strong>Integrale</strong> <strong>sui</strong> <strong>Cammini</strong> <strong>di</strong> <strong>Feynman</strong> attraverso <strong>la</strong><br />

Formu<strong>la</strong> <strong>di</strong> Trotter. . . . . . . . . . . . . . . . . . . . . . . . . . . 1<br />

0.3 Formu<strong>la</strong>zione <strong>di</strong> <strong>Feynman</strong> del<strong>la</strong> Meccanica Quantistica: Postu<strong>la</strong>ti. 4<br />

0.4 Natura e Caratteristiche dei <strong>Cammini</strong> <strong>di</strong> <strong>Feynman</strong>. . . . . . . . . 5<br />

0.5 Ambiguità <strong>di</strong> Quantizzazione dell’<strong>Integrale</strong> <strong>di</strong> <strong>Feynman</strong> . . . . . 7<br />

0.6 Equivalenza tra <strong>la</strong> Formu<strong>la</strong>zione <strong>di</strong> <strong>Feynman</strong> e <strong>la</strong> Formu<strong>la</strong>zione<br />

Standard del<strong>la</strong> MQ . . . . . . . . . . . . . . . . . . . . . . . . . . 8<br />

0.7 Problematiche <strong>di</strong> Convergenza dell’<strong>Integrale</strong> <strong>di</strong> <strong>Feynman</strong> . . . . . 9<br />

0.8 La Formu<strong>la</strong> <strong>di</strong> <strong>Feynman</strong>-Kac e <strong>la</strong> Misura <strong>di</strong> Wiener. . . . . . . . 10<br />

0.9 Equazione del Calore e Moto Browniano . . . . . . . . . . . . . . 12<br />

0.10 <strong>Integrale</strong> <strong>di</strong> <strong>Feynman</strong> e <strong>Integrale</strong> <strong>di</strong> Wiener . . . . . . . . . . . . 14<br />

0.11 Equazione <strong>di</strong> Fokker-P<strong>la</strong>nck e Fluttuazioni Quantistiche . . . . . 15<br />

.1 Appen<strong>di</strong>ce A: Derivazione dell’<strong>Integrale</strong> <strong>di</strong> <strong>Feynman</strong> attraverso<br />

l’Operatore Normalmente Or<strong>di</strong>nato . . . . . . . . . . . . . . . . . 17<br />

.2 Appen<strong>di</strong>ce B: un paio <strong>di</strong> Definizioni e un Teorema . . . . . . . . 19<br />

Bibliografia 20<br />

.3 Ringraziamenti . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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