Diffractive and deeply virtual Compton scattering in holographic QCD

We further analyze the holographic dipole-dipole scattering amplitude developed in arXiv:1202.0831, 1205.3223. Gribov diffusion at strong coupling yields the scattering amplitude in a confining background. We compare the holographic result for the differential cross section to proton-proton and deeply virtual Compton scattering data

Improved AdS/QCD Model with Matter

We study an improved AdS/QCD model at finite temperature and chemical potential. An Ansatz for the beta-function for the boundary theory allows for the derivation of a charged dilatonic black hole in bulk. The solution is asymptotically RN-AdS in the UV and AdS2 * R3 in the IR. We discuss the thermodynamical aspects of the solution. The fermionic susceptibilities are shown to deviate from the free fermionic limits at asymptotic temperatures despite the asymptotically free nature of the gauge coupling at the boundary. The Polyakov line, the temporal and spatial string tensions dependence on both temperature and chemical potential are also discussed

Holographic Pomeron: Saturation and DIS

We briefly review the approach to dipole-dipole scattering in holographic QCD developed in ARXIV:1202.0831. The Pomeron is modeled by exchanging closed strings between the dipoles and yields Regge behavior for the elastic amplitude. We calculate curvature corrections to this amplitude in both a conformal and confining background, identifying the holographic direction with the virtuality of the dipoles. The it wee-dipole density is related to the string tachyon diffusion in both virtuality and the transverse directions. We give an explicit derivation of the dipole saturation momentum both in the conformal and confining metric. Our holographic result for the dipole-dipole cross section and the it wee-dipole density in the conformal limit are shown to be identical in form to the BFKL pomeron result when the non-critical string transverse dimension is $D_\perp=3$. The total dipole-dipole cross section is compared to DIS data from HERA

Towards Specificationless Monitoring of Provenance-Emitting Systems

Monitoring often requires insight into the monitored system as well as concrete specifications of expected behavior. More and more systems, however, provide information about their inner procedures by emitting provenance information in a W3C-standardized graph format. In this work, we present an approach to monitor such provenance data for anomalous behavior by performing spectral graph analysis on slices of the constructed provenance graph and by comparing the characteristics of each slice with those of a sliding window over recently seen slices. We argue that this approach not only simplifies the monitoring of heterogeneous distributed systems, but also enables applying a host of well-studied techniques to monitor such systems

Salts of HCN-Cyanide Aggregates : [CN(HCN)2]− and [CN(HCN)3]−

Although pure hydrogen cyanide can spontaneously polymerize or even explode, when initiated by small amounts of bases (e.g. CN−), the reaction of liquid HCN with [WCC]CN (WCC=weakly coordinating cation=Ph4P, Ph3PNPPh3=PNP) was investigated. Depending on the cation, it was possible to extract salts containing the formal dihydrogen tricyanide [CN(HCN)2]− and trihydrogen tetracyanide ions [CN(HCN)3]− from liquid HCN when a fast crystallization was carried out at low temperatures. X-ray structure elucidation revealed hydrogen-bridged linear [CN(HCN)2]− and Y-shaped [CN(HCN)3]− molecular ions in the crystal. Both anions can be considered members of highly labile cyanide-HCN solvates of the type [CN(HCN)n]− (n=1, 2, 3 …) as well as formal polypseudohalide ions. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA

Let's talk FAIR for research software

The session will cover practices in and handling of research software development and how they relate to the FAIR principles [0]. We will introduce current challenges that we have faced and/or identified in our daily work and research. Using the format World Cafe, we like to discuss such challenges with you to gather your perspectives and ideas. Existing material, e.g. [1], about minimal prerequisites for software publication is discussed and (ideally) improved. The *Findability* aspect is further investigated when we discuss how/why/where we search for software and *Reuse* may be touched upon. The situation in HPC environments may differ from common research labs and we will look at user-oriented services and workflows to make such environments more Accessible* and *Interoperable. The audience is free to focus on any aspect or cover all. [0] https://www.rd-alliance.org/groups/fair-research-software-fair4rs-wg [1] https://gitlab.com/hifis/hifis-workshop

Let's talk FAIR for research software

The session will cover practices in and handling of research software development and how they relate to the FAIR principles [0]. We will introduce current challenges that we have faced and/or identified in our daily work and research. Using the format World Cafe, we like to discuss such challenges with you to gather your perspectives and ideas. Existing material, e.g. [1], about minimal prerequisites for software publication is discussed and (ideally) improved. The *Findability* aspect is further investigated when we discuss how/why/where we search for software and *Reuse* may be touched upon. The situation in HPC environments may differ from common research labs and we will look at user-oriented services and workflows to make such environments more Accessible* and *Interoperable. The audience is free to focus on any aspect or cover all. [0] https://www.rd-alliance.org/groups/fair-research-software-fair4rs-wg [1] https://gitlab.com/hifis/hifis-workshop

Jet quenching in shock waves

We study the propagation of an ultrarelativistic light quark jet inside a shock wave using the holographic principle. The maximum stopping distance and its dependency on the energy of the jet is obtained