26 research outputs found
Yangian symmetry and bound states in AdS/CFT boundary scattering
We consider the problem of boundary scattering for Y=0 maximal giant graviton
branes. We show that the boundary S-matrix for the fundamental excitations has
a Yangian symmetry. We then exploit this symmetry to determine the boundary
S-matrix for two-particle bound states. We verify that this boundary S-matrix
satisfies the boundary Yang-Baxter equations.Comment: 17 page
On the reflection of magnon bound states
We investigate the reflection of two-particle bound states of a free open
string in the light-cone AdS_5 x S^5 string sigma model, for large angular
momentum J=J_56 and ending on a D7 brane which wraps the entire AdS_5 and a
maximal S^3 of S^5. We use the superspace formalism to analyse fundamental and
two-particle bound states in the cases of supersymmetry-preserving and
broken-supersymmetry boundaries. We find the boundary S-matrices corresponding
to bound states both in the bulk and on the boundary.Comment: 35 pages, v2: few typos and ref corrected, accepted for publication
in JHE
The secret symmetries of the AdS/CFT reflection matrices
We find new twisted Yangian symmetries of the AdS/CFT reflection matrices for
the Y=0 maximal giant graviton and D5-brane. These new symmetries originate
from the known secret symmetries of the Yangian symmetry of the AdS/CFT
S-matrix.Comment: 9 pages, v2: published versio
Yangian symmetry of boundary scattering in AdS/CFT and the explicit form of bound state reflection matrices
The reflection matrices of multi magnon bound states are obtained explicitely
by exploiting the Yangian symmetry of boundary scattering on the Y=0 maximal
giant graviton brane.Comment: 13 page
Representations of twisted Yangians of types B, C, D: I
We initiate a theory of highest weight representations for twisted Yangians of types B, C, D and we classify the finite-dimensional irreducible representations of twisted Yangians associated to symmetric pairs of types CI, DIII and BCD0
Effect of shock wave reapplication on urinary n-acetyl-beta-glucosaminidase in canine kidney
OBJECTIVE: Renal tubular damage can be assessed with the aid of urinary dosing of N-acetyl-beta-glucosaminidase (NAG) and it is possible to demonstrate a significant correlation between shock wave and damage to renal parenchyma. The objective of this study was to assess the effect of shock wave reapplication over urinary NAG in canine kidney. MATERIALS AND METHODS: The authors submitted 10 crossbred dogs to 2 applications of 2000 shock waves in a 24-hour interval in order to assess urinary NAG values after 12, 24, 36 and 48 hours. RESULTS: Twelve hours following the first shockwave application there was an increase in NAG of 6.47 ± 5.44 u/g creatinine (p < 0.05). Twelve hours and 24 h following the second application there was no increase in the urinary enzyme, - 2.56 ± - 7.36 u/g creatinine and 2.89 ± - 7.27 u/g creatinine, respectively (p > 0.05). CONCLUSION: Shock wave reapplication with a 24-hour interval did not cause any increase in urinary NAG