Browsing by Author "Rashkov, RC"

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Generalization of the Lunin-Maldacena transformation on the AdS(5) x S-5 background
(2005-11-01)
Rashkov, RC
;
Viswanathan, KS
;
Yang, Y
;
電子物理學系
;
Department of Electrophysics
In this paper we consider a simple generalization of the method of Lunin and Maldacena for generating new string backgrounds based on TsT transformations. We study multishift Ts(...)sT transformations applied to backgrounds with at least two U(1) isometries. We prove that the string currents in any two backgrounds related by Ts(...)sT transformations are equal. Applying this procedure to the AdS(5)xS(5), we find a new background and study some properties of the semiclassical strings.
Semiclassical analysis of string-gauge duality on noncommutative space
(2004-10-01)
Rashkov, RC
;
Viswanathan, KS
;
Yang, Y
;
電子物理學系
;
Department of Electrophysics
We use semiclassical methods to study closed strings in the modified AdS(5)xS(5) background with constant B fields. The pointlike closed strings and the stretched closed strings rotating around the big circle of S-5 are considered. Quantization of these closed string leads to a time-dependent string spectrum, which we argue corresponds to the renormalization-group flow of the dual noncommutative Yang-Mills theory.