Hasil untuk "hep-th"

Hajar A. Hasin, Diman Hassan, Ismael A. Ali

In network analysis, the prediction of the connections or associations between entities or nodes within the network becomes important. Link Prediction is the problem of predicting or identifying the existence of a link between two entities in a network. However, it still the main issue in the complex network data application field, particularly in the type of analysis related to co-authorship networks despite its wide usage. Topological methods and content-based methods are the two different approaches that have been proposed for the link prediction in collaboration networks. However, topological methods are based on the structural analysis of the network, and content-based approaches rely on textual information from academic papers in the network. In this paper, we introduce the Content and Graph-Based Link Prediction (CGLP) approach, which integrates topological and content-based features from networks in a hybrid manner for predicting links in co-authorship networks. The efficacy of the proposed approach was already tested using three academic datasets: Hep-th, Hep-lat, and AMC by applying various machine learning models. Results indicated that all models showed almost the same efficiency on all three datasets and outperformed the state-of-the-art approach with a maximum F1 score of 98.05% and ROC AUC of 98.74%.

I.L. Buchbinder, S.A. Fedoruk, A.P. Isaev et al.

We study the symmetry properties of infinite spin fields in AdS4 space which are involved in the Lagrangian model proposed in arXiv:2403.14446 [hep-th] where the main role is played by operator constraints. It is shown that the conditions defining infinite spin states in AdS4 space are SO(2,3)-invariant. It is found that in the model under consideration the Casimir operators are completely fixed by the constraint operators and only one of the Casimir operators is independent. It is shown that in this model, infinite spin fields in AdS4 space are described by the most degenerate representations of the SO(2,3) group.

Ali Eghbali, Adel Rezaei-Aghdam

Abstract Motivated by super Poisson–Lie (PL) symmetry of the Wess–Zumino–Witten (WZW) model based on the $$(C^3+A)$$ ( C 3 + A ) Lie supergroup of our previous work (Eghbali et al., in J High Energy Phys 07:134, 2013. arXiv:1303.4069 [hep-th]), we first obtain and classify all Drinfeld superdoubles (DSDs) generated by the Lie superbialgebra structures on the $$({\mathscr {C}}^3+ {\mathscr {A}})$$ ( C 3 + A ) Lie superalgebra as a theorem. Then, introducing a general formulation we find the conditions under which a two-dimensional $$\sigma $$ σ -model may be equivalent to a WZW model. With the help of this formulation and starting the super PL symmetric $$(C^3+A)$$ ( C 3 + A ) WZW model, we get a hierarchy of WZW models related to super PL T-duality, in such a way that it is different from the super PL T-plurality, because the DSDs are, in this process, non-isomorphic. The most interesting indication of this work is that the $$(C^3+A)$$ ( C 3 + A ) WZW model does remain invariant under the super PL T-duality transformation, that is, the model is super PL self-dual.

Kaberi Goswami, K. Narayan

Abstract We continue the study of 4-dimensional Schwarzschild de Sitter black holes in the regime where the black hole mass is small compared with the de Sitter scale, following arXiv:2207.10724 [hep-th]. The de Sitter temperature is very low compared with that of the black hole. We consider the future boundary as the location where the black hole Hawking radiation is collected. Using 2-dimensional tools, we find unbounded growth of the entanglement entropy of radiation as the radiation region approaches the entire future boundary. Self-consistently including appropriate late time islands emerging just inside the black hole horizon leads to a reasonable Page curve. We also discuss other potential island solutions which show inconsistencies.

Bogdan Ganchev, Stefano Giusto, Anthony Houppe et al.

Abstract By using the approach introduced in Ganchev et al. (Q-Balls Meet Fuzzballs: Non-BPS Microstate Geometries. arXiv:2107.09677 [hep-th]) we construct non-BPS solutions of 6D (1, 0) supergravity coupled to two tensor multiplets as a perturbation of $$\hbox {AdS}_3\times S^3$$ AdS 3 × S 3 . These solutions are both regular and asymptotically $$\hbox {AdS}_3\times S^3$$ AdS 3 × S 3 , so according to the standard holographic framework they must have a dual CFT interpretation as non-supersymmetric heavy operators of the D1–D5 CFT. We provide quantitative evidence that such heavy CFT operators are bound states of a large number of light BPS operators that are mutually non-BPS.