Cusp anomalous dimension in maximally supersymmetric Yang-Mills theory at strong coupling

We construct an exact analytical solution to the integral equation which is believed to describe logarithmic growth of the anomalous dimensions of high spin operators in planar N=4 super Yang-Mills theory and use it to determine the strong coupling expansion of the cusp anomalous dimension.Comment: 5 pages. v3: minor corrections, references and important note adde

Scattering of Giant Holes

We study scalar excitations of high spin operators in N=4 super Yang-Mills theory, which are dual to solitons propagating on a long folded string in AdS_3 x S^1. In the spin chain description of the gauge theory, these are associated to holes in the magnon distribution in the sl(2,R) sector. We compute the all-loop hole S-matrix from the asymptotic Bethe ansatz, and expand in leading orders at weak and strong coupling. The worldsheet S-matrix of solitonic excitations on the GKP string is calculated using semiclassical quantization. We find an exact agreement between the gauge theory and string theory results.Comment: 13 pages. v2: minor corrections, references adde

Wrapping corrections, reciprocity and BFKL beyond the sl(2) subsector in N=4 SYM

We consider N=4 SYM and a class of spin N, length-3, twist operators beyond the well studied sl(2) subsector. They can be identified at one-loop with three gluon operators. At strong coupling, they are associated with spinning strings with two spins in AdS5. We exploit the Y-system to compute the leading weak-coupling four loop wrapping correction to their anomalous dimension. The result is written in closed form as a function of the spin N. We combine the wrapping correction with the known four-loop asymptotic Bethe Ansatz contribution and analyze special limits in the spin N. In particular, at large N, we prove that a generalized Gribov-Lipatov reciprocity holds. At negative unphysical spin, we present a simple BFKL-like equation predicting the rightmost leading poles.Comment: 18 page

Momentum space saturation model for deep inelastic scattering and single inclusive hadron production

We show how the AGBS model, originally developed for deep inelastic scattering applied to HERA data on the proton structure function, can also describe the RHIC data on single inclusive hadron yield for $d+Au$ and $p+p$ collisions through a new simultaneous fit. The single inclusive hadron production is modeled through the color glass condensate, which uses the quark(and gluon)--condensate amplitudes in momentum space. The AGBS model is also a momentum space model based on the asymptotic solutions of the BK equation, although a different definition of the Fourier transform is used. This aspect is overcome and a description entirely in transverse momentum of both processes arises for the first time. The small difference between the simultaneous fit and the one for HERA data alone suggests that the AGBS model describes very well both kind of processes and thus emerges as a good tool to investigate the inclusive hadron production data. We use this model for predictions at LHC energies, which agree very well with available experimental data.Comment: 10 pages, 7 figure

TBA-like equations and Casimir effect in (non-)perturbative AdS/CFT

We consider high spin, $s$, long twist, $L$, planar operators (asymptotic Bethe Ansatz) of strong ${\cal N}=4$ SYM. Precisely, we compute the minimal anomalous dimensions for large 't Hooft coupling $\lambda$ to the lowest order of the (string) scaling variable $\ell \sim L/ (\ln \mathcal{S} \sqrt{\lambda})$ with GKP string size $\sim\ln \mathcal{S}\equiv 2 \ln (s/\sqrt{\lambda})$. At the leading order $(\ln \mathcal{S}) \cdot \ell ^2$, we can confirm the O(6) non-linear sigma model description for this bulk term, without boundary term $(\ln \mathcal{S})^0$. Going further, we derive, extending the O(6) regime, the exact effect of the size finiteness. In particular, we compute, at all loops, the first Casimir correction $\ell ^0/\ln \mathcal{S}$ (in terms of the infinite size O(6) NLSM), which reveals only one massless mode (out of five), as predictable once the O(6) description has been extended. Consequently, upon comparing with string theory expansion, at one loop our findings agree for large twist, while reveal for negligible twist, already at this order, the appearance of wrapping. At two loops, as well as for next loops and orders, we can produce predictions, which may guide future string computations.Comment: Version 2 with: new exact expression for the Casimir energy derived (beyond the first two loops of the previous version); UV theory formulated and analysed extensively in the Appendix C; origin of the O(6) NLSM scattering clarified; typos correct and references adde

Quantum folded string and integrability: from finite size effects to Konishi dimension

Using the algebraic curve approach we one-loop quantize the folded string solution for the type IIB superstring in AdS(5)xS(5). We obtain an explicit result valid for arbitrary values of its Lorentz spin S and R-charge J in terms of integrals of elliptic functions. Then we consider the limit S ~ J ~ 1 and derive the leading three coefficients of strong coupling expansion of short operators. Notably, our result evaluated for the anomalous dimension of the Konishi state gives 2\lambda^{1/4}-4+2/\lambda^{1/4}. This reproduces correctly the values predicted numerically in arXiv:0906.4240. Furthermore we compare our result using some new numerical data from the Y-system for another similar state. We also revisited some of the large S computations using our methods. In particular, we derive finite--size corrections to the anomalous dimension of operators with small J in this limit.Comment: 20 pages, 1 figure; v2: references added, typos corrected; v3: major improvement of the references; v4: Discussion of short operators is restricted to the case n=1. This restriction does not affect the main results of the pape

Hybrids and inbred lines of silkworm (Lepidoptera: Bombyx mori L.): preliminary productive results

TIn Argentina sericulture is a new activity and is carried out by small producers as a complementary activity. The use of hybrid vigor in the silk production is used in several developed countries and the productivity and the quality depend on the hybrid involved. The objective of this work is to evaluate, in a preliminary way, some productive features of hybrids derived from inbred lines from the Faculty of Agronomy of the University of Buenos Aires. Were used four inbred and six crosses between them were bred in controlled conditions of temperature and humidity. Were fed four times a day with fresh mulberry leaves. In a 20 individuals sample four quantitative variables were measured: larval weight in the 5th stage, whole cocoon weight, cocoon without pupa weight and cocoon length. Significant differences between the means of the 10 genotypes for all the variables analyzed were detected. The crosses have shown different results depending on the crossing and the studied character. The overall result is that the hybrids productivity in these preliminary trials shows the superiority of some crosses over others and over the inbred lines.Fil: Basso, C.P. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Cátedra de Producciones Animales Alternativas. Buenos Aires, ArgentinaFil: Dobler, S. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Cátedra de Producciones Animales Alternativas. Buenos Aires, ArgentinaFil: Lopez Zieher, X. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Cátedra de Producciones Animales Alternativas. Buenos Aires, ArgentinaFil: Bartoloni, N. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información. Cátedra de Producciones Animales Alternativas. Buenos Aires, ArgentinaEn Argentina la sericicultura es una actividad novedosa y es llevada a cabo por pequeños productores como actividad complementaria. La utilización del vigor híbrido en la producción de seda se emplea en la mayoría de los países desarrollados y la productividad y calidad dependen del híbrido involucrado. El objetivo del trabajo es evaluar, en forma preliminar, algunas características productivas de híbridos obtenidos a partir de líneas endocriadas en la Facultad de Agronomía de la Universidad de Buenos Aires. Se utilizaron 4 líneas endocriadas y 6 cruzamientos entre ellas, criadas en condiciones de temperatura y humedad controladas. La alimentación se realizó 4 veces al día con hojas frescas de moreras. En una muestra de 20 individuos, se midieron 4 variables cuantitativas: peso larval en el 5º estadio, peso del capullo entero, peso del capullo sin pupa y largo de capullos. Se detectaron diferencias significativas entre las medias de los 10 genotipos para todas las variables analizadas. Los cruzamientos realizados han exhibido diferentes resultados según el cruzamiento y el carácter estudiado. El resultado general es que la productividad de los híbridos en estas pruebas preliminares muestra la superioridad de determinados cruzamientos sobre otros y sobre las líneas endocriadas

Longitudinal sleeve gastrectomy: current perspectives

Emanuele Soricelli, Giovanni Casella, Giorgio Di Rocco, Adriano Redler, Nicola BassoDepartment of Surgical Sciences, Policlinico Umberto I, Sapienza, University of Rome, ItalyAbstract: Since the early 2000s, laparoscopic sleeve gastrectomy has increasingly gained consensus in bariatric surgery, thanks to good to excellent results in terms of weight loss and comorbidity resolution, and to simpler technical aspects than in Roux-en-Y gastric bypass and biliopancreatic diversion. In yearly consensus summits, surgical indications, technical details, and management of complications, together with continuous update of data concerning clinical outcome, have been debated on the basis of increasing collective experience. In experimental studies and clinical trials, the pathophysiological mechanisms of weight loss and remission of cardiometabolic comorbidities subsequent to sleeve gastrectomy have been extensively discussed. The aim of this paper is to offer a review of state of the art laparoscopic sleeve gastrectomy and to focus attention on the currently most debated topics and future prospects of this procedure.Keywords: sleeve gastrectomy, type 2 diabetes mellitus, gastroesophageal reflux disease, revisional, quality of lif

Zoonotic potential of guinea pigs: Outbreak of cryptosporidiosis combined with chlamydiosis in a breeding guinea pig herd.

In a guinea pig herd with 26 breeding animals, several individuals of all age categories died (16/26) after three animals had been newly introduced from another herd. Furthermore, the population suffered of apathy, anorexia, severe weight loss and conjunctivitis, as well as abortions and stillbirths. At the same time, the owner experienced a SARS-CoV-2 infection with pneumonia, which was confirmed by taking a PCR test. Chlamydia caviae was detected from the conjunctiva and vagina/uterus in one juvenile animal together with an intestinal Cryptosporidium wrairi infection. Oocysts were found histologically in the small intestine, which was confirmed by PCR. C. wairi is a parasite adapted to guinea pigs with zoonotic potential, which causes diarrhoea with frequent deaths in larger guinea pig herds. C. caviae is also a zoonotic pathogen and often the cause of conjunctivitis, pneumonia and abortions in guinea pigs and can lead to upper respiratory tract disease, conjunctivitis but also severe pneumonia in humans. The increased death cases and the clinical signs could be traced back to an infection with Cryptosporidium wrairi, complicated by a co-infection of C. caviae. We suspect that the abortions were caused by C. caviae, but since the population was treated with various antibiotics effective against chlamydial infections, it was no longer possible to verify this by PCR testing. Unfortunately, more animals succumbed and finally only two animals of the originally 26 were left. With this case report, we would like to point out to veterinarians that guinea pigs can be an important source of zoonotic infections for various pathogens, especially since they are popular pets and often come into close contact with children where hygiene might not always be strictly followed