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Exact Results for 't Hooft Loops in Gauge Theories ... - Solvay Institutes

Exact Results for 't Hooft Loops in Gauge Theories ... - Solvay Institutes

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Introduction Problem Def<strong>in</strong>itions Method Solution Result<br />

Motivation<br />

Why we look on supersymmetric loops <strong>in</strong> N = 2 theories?<br />

• What from N = 4 SYM can be pushed to N = 2?<br />

• How S-duality acts? Can we compute vevs of Wilson and ’t<br />

<strong>Hooft</strong> and test S-duality precisely?<br />

• The loop observables <strong>in</strong> N = 2 theories are novel - not<br />

computable from Seiberg-Witten theory - hence we’ll learn<br />

someth<strong>in</strong>g new about N = 2 dynamics if compute them<br />

Vasily Pestun Localization <strong>for</strong> ’t <strong>Hooft</strong> operators on S 4 4/35

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