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Gauge/gravity duality: an overview Z. Bajnok

Gauge/gravity duality: an overview Z. Bajnok

Gauge/gravity duality: an overview Z. Bajnok

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Fundamental interactions<br />

CFT: maximally supersymmetric gauge theory<br />

interaction particles gauge theory<br />

electromagnetic photon+electron U(1)<br />

electroweak W ± , Z µ,ν+Higgs SU(2) × U(1)<br />

strong gluon+quarks SU(3)<br />

only <strong>an</strong>alytical tool: perturbation theory<br />

maximally supersymmetric gauge theory<br />

interaction particles gauge theory<br />

N = 4 supersymm. gluon+quarks+scalars SU(N)<br />

Coupling<br />

SU(3)<br />

SU(2)<br />

U(1)<br />

non−perturbative<br />

no <strong>an</strong>alytical tool<br />

perturbative<br />

strong force<br />

electroweak force<br />

Energy<br />

L = 2<br />

g 2 Y M<br />

all fields N 2 − 1 component matrix<br />

Ψ 1,2,3,4<br />

↗<br />

↘<br />

A µ Φ 1,2,3,4,5,6<br />

↘<br />

↗<br />

Ψ 1,2,3,4<br />

∫ d 4 xTr [ − 1 4 F 2 − 1 2 (DΦ)2 + iΨD/ Ψ + V ]<br />

V (Φ, Ψ) = 1 4 [Φ, Φ]2 + Ψ[Φ, Ψ]<br />

no running β = 0 → CFT<br />

no confinement<br />

supersymmetric<br />

heavy ion collision:<br />

finite T → SUSY is broken<br />

quark-gluon plasma is not confined<br />

7

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