152 research outputs found
Three-point correlators: Examples from Lunin-Maldacena background
Recently there has been progress on the calculation of three-point functions
with two "heavy" operators via semiclassical methods. We extend this analysis
to the case of the Lunin-Maldacena background, and examine the suggested
procedure for several simple string solutions. By making use of AdS/CFT
duality, we derive the relevant correlation functions of operators belonging to
the dual N=1 superconformal gauge theory, and recover an important relation
connecting the dimensions of "heavy" states and the structure constants.Comment: 11 pages, no figures, incorrect subsection removed, typos fixed,
references added and update
On the pulsating strings in Sasaki-Einstein spaces
We study the class of pulsating strings in AdS_5 x Y^{p,q} and AdS_5 x
L^{p,q,r}. Using a generalized ansatz for pulsating string configurations, we
find new solutions for this class in terms of Heun functions, and derive the
particular case of AdS_5 x T^{1,1}, which was analyzed in arXiv:1006.1539
[hep-th]. Unfortunately, Heun functions are still little studied, and we are
not able to quantize the theory quasi-classically and obtain the first
corrections to the energy. The latter, due to AdS/CFT correspondence, is
supposed to give the anomalous dimensions of operators of the gauge theory dual
N=1 superconformal field theory.Comment: 9 pages, talk given at the 2nd Int. Conference AMiTaNS, 21-26 June
2010, Sozopol, Bulgaria, organized by EAC (Euro-American Consortium) for
Promoting AMiTaNS, to appear in the Proceedings of 2nd Int. Conference
AMiTaN
Diagnostic and treatment strategy in complicated colon diverticulitis
Acute diverticulitis is a disease with a wide clinical spectrum, ranging from a phlegmon (stage I a) to localized abscesses (stages I b and II), to free perforation with purulent (stage III) or feculent (stage IV) peritonitis. The planned therapy of colonic diverticulitis is very difficult because preoperative diagnosis is uncommon and the method of treatment is usually decided at the time of laparotomy. While there is a little debate about the best treatment for mild episodes, uncertainty persists about the optimal management for severe episodes and complicated diverticulitis
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