Zobrazeno 1 - 10
of 3 302
pro vyhledávání: '"Assaad P"'
We consider a Su-Schrieffer-Heeger model in the assisted hopping limit, where direct electron hopping is subdominant. At fixed electron-phonon coupling and in the absence of Coulomb interactions, the model shows a deconfined quantum critical point (D
Externí odkaz:
http://arxiv.org/abs/2412.17215
Causal discovery is essential for understanding complex systems, yet traditional methods often depend on strong, untestable assumptions, making the process challenging. Large Language Models (LLMs) present a promising alternative for extracting causa
Externí odkaz:
http://arxiv.org/abs/2412.14019
Angle-Tuned Gross-Neveu Quantum Criticality in Twisted Bilayer Graphene: A Quantum Monte Carlo Study
Autor:
Huang, Cheng, Parthenios, Nikolaos, Ulybyshev, Maksim, Zhang, Xu, Assaad, Fakher F., Classen, Laura, Meng, Zi Yang
The tunability of twisted bilayber graphene (TBG) in particular and the 2D moir\'e materials in general has revealed fascinating quantum many-body states of matter. Unstrained magic-angle TBG at the charge-neutrality point is understood, both experim
Externí odkaz:
http://arxiv.org/abs/2412.11382
We present a study on the hydrodynamic behavior of charge current in a Lorentz symmetric system: graphene at charge-neutrality. The momentum flow is completely decoupled from the charge current in this regime, since the electrons and holes propagate
Externí odkaz:
http://arxiv.org/abs/2411.13273
Autor:
Reinold, Anneke, Berger, Lucas, Raczkowski, Marcin, Zhao, Zhiying, Kohama, Yoshimitsu, Gen, Masaki, Gorbunov, Denis I., Skourski, Yurii, Zherlitsyn, Sergei, Assaad, Fakher F., Lorenz, Thomas, Wang, Zhe
We report on a comprehensive thermodynamic study of a quasi-two-dimensional (quasi-2D) quantum magnet Cu$_2$(OH)$_3$Br which in the 2D layer can be viewed as strongly coupled alternating antiferromagnetic and ferromagnetic chains. In an applied magne
Externí odkaz:
http://arxiv.org/abs/2411.09541
Autor:
Faúndez, Julián, Fontenele, Rodrigo Alves, Sousa-Júnior, Sebastião dos Anjos, Assaad, Fakher F., Costa, Natanael C.
In this work, we investigate the impact of Rashba spin-orbit coupling (RSOC) on the formation of charge-density wave (CDW) and superconducting (SC) phases in the Holstein model on a half-filled square lattice. Using unbiased finite-temperature Quantu
Externí odkaz:
http://arxiv.org/abs/2411.07119
This paper explores distributed Reconfigurable Intelligent Surfaces (RISs) by introducing a cooperative dimension that enhances adaptability and performance. It focuses on strategically deploying multiple RISs to improve connectivity with the Base St
Externí odkaz:
http://arxiv.org/abs/2411.05583
Autor:
Assaad, Charles K.
In epidemiology, understanding causal mechanisms across different populations is essential for designing effective public health interventions. Recently, difference graphs have been introduced as a tool to visually represent causal variations between
Externí odkaz:
http://arxiv.org/abs/2411.01292
Autor:
Ferreira, Simon, Assaad, Charles K.
In this paper, we investigate the identifiability of average controlled direct effects and average natural direct effects in causal systems represented by summary causal graphs, which are abstractions of full causal graphs, often used in dynamic syst
Externí odkaz:
http://arxiv.org/abs/2410.23975
Autor:
Mhanna, Elissa, Assaad, Mohamad
Publikováno v:
Proceedings of the 40th International Conference on Machine Learning, PMLR 202:24701-24719, 2023
Zero-order (ZO) optimization is a powerful tool for dealing with realistic constraints. On the other hand, the gradient-tracking (GT) technique proved to be an efficient method for distributed optimization aiming to achieve consensus. However, it is
Externí odkaz:
http://arxiv.org/abs/2410.05942