Talk detail

Participant	Murata, Keiju
Institution	Keio University - 4-1-1, Hiyoshi, Kohoku-ku - Yokohama-shi - Kanagawa-ken - Japan

Session	ST3	Accepted		Order	Time
Talk	Oral abstract	Title	Turbulent strings in AdS/CFT
Coauthors
Abstract	We study nonlinear dynamics of the flux tube between an external quark-antiquark pair in N=4 super Yang-Mills theory using the AdS/CFT duality. In the gravity side, the flux tube is realized by a fundamental string whose endpoints are attached to the AdS boundary. We perturb the endpoints in various ways and numerically compute the time evolution of the nonlinearly oscillating string. As a result, cusps can form on the string, accompanied by weak turbulence and power law behavior in the energy spectrum. When cusps traveling on the string reach the boundary, we observe the divergence of the force between the quark and antiquark. Minimal amplitude of the perturbation below which cusps do not form is also investigated. No cusp formation is found when the string moves in all four AdS space directions, and in this case an inverse energy cascade follows a direct cascade.
Pdf file

Session	ST3	Accepted		Order	Time
Talk	Oral abstract	Title	Turbulent strings in AdS/CFT
Coauthors
Abstract	We study nonlinear dynamics of the flux tube between an external quark-antiquark pair in N=4 super Yang-Mills theory using the AdS/CFT duality. In the gravity side, the flux tube is realized by a fundamental string whose endpoints are attached to the AdS boundary. We perturb the endpoints in various ways and numerically compute the time evolution of the nonlinearly oscillating string. As a result, cusps can form on the string, accompanied by weak turbulence and power law behavior in the energy spectrum. When cusps traveling on the string reach the boundary, we observe the divergence of the force between the quark and antiquark. Minimal amplitude of the perturbation below which cusps do not form is also investigated. No cusp formation is found when the string moves in all four AdS space directions, and in this case an inverse energy cascade follows a direct cascade.
Pdf file