SEMINAR:- New Relations Between Gauge and Gravity Amplitudes in Field and String Theory
One of the most notorious relations between gauge and gravity amplitudes are the so-called Kawai-Lewellen-Tye (KLT) relations implied by string theory. After some introduction into recent advances in amplitude computations we will exhibit further relations between gauge and gravity amplitudes in field and string theory, which point into a deeper connection between gauge and gravity amplitudes than what is implied by the KLT relations.
時間：2017.01.20(五) 14:00
地點：香港科技大學 李兆基校園 盧家驄薈萃樓4樓 高研院4042室
講者：Prof Stephan Stieberger (Max-Planck-Institut für Physik)
SEMINAR:- A Holographic Description of Cosmic Preheating
Recently, a holographic description of cosmic preheating is about to be proposed. This aims to study the process of preheating at strong coupling where the perturbation theory has broken down. A model of holographic superconductor inspired by condensed matter theory in terms of two superfluids in five dimensional AdS background was adopted, which can mimic a cosmic system of the inflation strongly coupled with a fermionic matter field. The corresponding cosmological implications can be translated by performing a conformal transformation from the Minkowski boundary to an FRW boundary.
發表於 2016-11-16 11:22:04
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