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# Quantum Fields and Strings

This series consists of talks in the area of Quantum Fields and Strings.

## Seminar Series Events/Videos

Currently there are no upcoming talks in this series.

## 1/4 BPS Loops in N=4 Super-Yang-Mills: Bridges between weak and strong coupling

Mardi oct 10, 2006
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## Matching of the Hagedorn temperature in AdS/CFT

Mardi sep 26, 2006
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## Counting BPS states on the Quintic

Mardi sep 19, 2006
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## Giant Magnons

Mardi sep 12, 2006
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Studies of ${cal N}=4$ super Yang Mills operators with large R-charge have shown that, in the planar limit, the problem of computing their dimensions can be viewed as a certain spin chain. These spin chains have fundamental magnon\'\' excitations which obey a dispersion relation that is periodic in the momentum of the magnons. This result for the dispersion relation was also shown to hold at arbitrary \'t Hooft coupling. Here we identify these magnons on the string theory side and we show how to reconcile a periodic dispersion relation with the continuum worldsheet description.

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## Born-Infeld Black Holes

Mardi juin 20, 2006
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## Magnetic domain walls of relic fermions as Dark Energy

Mardi juin 20, 2006
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## Geometric Flows and String Theory

Mardi juin 13, 2006
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Geometric flows, especially the Ricci flow, have been used with considerable success in recent years to address the Poincare and Thurston conjectures for 3-manifolds. In this talk, I will briefly introduce these geometric flows, and describe how they appear in a completely different context in the physics of string theory. I will then outline how recently developed techniques in geometric flows could be used to address questions of importance in string theory.

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## Ricci Flow Program in Math

Lundi juin 12, 2006
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## Supersymmetric Black Holes in AdS5

Lundi juin 05, 2006
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## Perturbative Gauge Theory as a Gauge Theory in Twistor Space

Mardi mai 23, 2006
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