16 research outputs found
On the dressing factors, Bethe equations and Yangian symmetry of strings on AdS3 × S3 × T4
Integrability is believed to underlie the AdS3/CFT2 correspondence with sixteen supercharges. We elucidate the role of massless modes within this integrable framework. Firstly, we find the dressing factors that enter the massless and mixed-mass worldsheet S matrix. Secondly, we derive a set of all-loop Bethe Equations for the closed strings, determine their symmetries and weak-coupling limit. Thirdly, we investigate the underlying Yangian symmetry in the massless sector and show that it fits into the general framework of Yangian integrability. In addition, we compare our S matrix in the near-relativistic limit with recent perturbative worldsheet calculations of Sundin and Wulff
The non-integrability of strings in massive type IIA and their holographic duals
In this work we study various aspects of six-dimensional
SCFTs. We consider the construction of their string duals in Massive IIA and
discuss some observables in given examples. We study the dynamics of string
solitons wrapping and rotating on the Massive IIA background and show that the
associated Hamiltonian system is both non-integrable and chaotic, implying the
non-integrability of the dual CFT. Our procedure is analytic, using well
developed mathematical techniques, and numerical, by the explicit calculation
of power spectra, Lyapunov coefficients and Poincar\'e sections.Comment: 28 pages plus appendices. Various figures. Some clarifications and
references adde
Semantic Distances in Depression: Relations Between ME and PAST, FUTURE, JOY, SADNESS, HAPPINESS
The air oxidation resistance of fused titanium and zirconium carbides in their regions of homogeneity
Influence of surface active agent on the size of metal powder particles during their ball milling in a planetary mill
Geoarchaeological and bioarchaeological studies at Mira, an early Upper Paleolithic site in the Lower Dnepr Valley, Ukraine
New geoarchaeological and bioarcheological research was undertaken at the open-air site of Mira, which is buried in deposits of the Second Terrace of the Dnepr River, roughly 15 km downstream from the city of Zaporozhye in Ukraine. Previous excavation of the site revealed two occupation layers dating to ∼32,000 cal BP. The lower layer (II/2) yielded bladelets similar to those of the early Gravettian, while the upper layer (I) contained traces of an artificial shelter and hundreds of bones and teeth of horse (Equus latipes). Mira represents the only firmly dated early Upper Paleolithic (EUP) site in the Dnepr Basin, and occupies a unique topographic setting for the EUP near the center of the broad floodplain of the Dnepr River. The site was visited during a period of floodplain stability, characterized by overbank deposition and weak soil formation under cool climate conditions. Mira was used as a long-term camp, but also was the locus of large-mammal carcass processing associated with a nearby kill of a group of horses (Layer I)