Introduction to the AdS/CFT correspondence
Introduction to the AdS/CFT correspondence
Introduction to the AdS/CFT correspondence
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15/22<br />
The Wilson loop<br />
<br />
<br />
<br />
µ An important observable in a QFT is <strong>the</strong><br />
dt A µ 9x qy,<br />
Wilson loop xtr pP exp i ³<br />
which depends on <strong>the</strong> con<strong>to</strong>ur C in spacetime<br />
<strong>AdS</strong>/<strong>CFT</strong> provides a method for calculating it<br />
Maldacena, 1998<br />
At large ’t Hooft coupling λ one should find a<br />
minimal area surface ending on <strong>the</strong> Wilson<br />
loop at <strong>the</strong> boundary<br />
C
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