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String theory cosmic strings – Dimitri P. Skliros

Date: Tue. March 30th, 2010, 11:30 am-12:30 pm
Location: Rockefeller 221

I will discuss the first construction of coherent states in the covariant formalism for both open and closed strings with applications to cosmic strings in mind. Furthermore, I provide an explicit map that relates three different descriptions of cosmic strings: classical strings, lightcone gauge quantum states and covariant vertex operators. I will then go on to discuss applications and future directions: string amplitude computations with such vertices and in particular decays of (the phenomenologically promising) cosmic strings with non-degenerate cusps in a framework that naturally incorporates the effects of gravitational backreaction. Partly based on:

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