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hep-th2006
String Theory: A Theory of Unification
Oswaldo Zapata
These notes on string theory are based on a series of talks I gave during my graduate studies. As the talks, this introductory essay is intended for young students and non-string t…
hep-th2003
On Hpp-wave/CFT_2 Holography
Oswaldo Zapata
We briefly review the AdS3/CFT2 correspondence and the holographic issues that arise in the Penrose limit. Exploiting current algebra techniques, developped by D'Appollonio and Kir…