Prioritized-MVBA: A New Approach to Design an Optimal Asynchronous Byzantine Agreement Protocol
Nasit S Sony, Xianzhong Ding, Mukesh Singhal
https://arxiv.org/abs/2406.03739
This https://arxiv.org/abs/2405.14478 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCR_…
This https://arxiv.org/abs/2405.06882 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…
Single-cycle, 643-mW average power THz source based on tilted pulse front in lithium niobate
Tim Vogel, Samira Mansourzadeh, Clara Jody Saraceno
https://arxiv.org/abs/2406.03318 <…
Pseudogap with Fermi arcs and Fermi pockets in half-filled twisted transition metal dichalcogenides
Yong-Yue Zong, Zhao-Long Gu, Jian-Xin Li
https://arxiv.org/abs/2406.11374 https://arxiv.org/pdf/2406.11374
arXiv:2406.11374v1 Announce Type: new
Abstract: Twisted transition metal dichalcogenides are a new platform for realizing strongly correlated physics with high tunability. Recent transport experiments have reported the realization of a Mott insulator, its bandwidth-driven evolution to a metal, and the strange metal behavior in proximity to the transition via the tuning of a displacement field in twisted $\mathrm{WSe_2}$($\mathrm{tWSe_2}$) fixed at half filling. However, the nature of the correlated states and the related Mott physics involved in the whole process remain to be determined. Here, we unveil theoretically the evolution of the ground state of the half-filled $\boldsymbol{\mathrm{moir\acute{e}}}$ Hubbard model as applied to $\mathrm{tWSe_2}$, transiting from a pseudogap state with Fermi arcs to a 120$^\circ$ Ne$\boldsymbol{\acute{\mathrm{e}}}$l ordered Mott insulator, then to another pseudogap state with Fermi pockets, and eventually to a Fermi liquid via a Lifshitz transition. The pseudogap phases are definitively identified by the vanishing of quasiparticle weights over an extended region of the free Fermi surface, with the remaining parts forming disconnected Fermi arcs or pockets that contain well-defined quasiparticles. The loss of quasiparticle weights in the pseudogap phases indicates the breakdown of Landau's Fermi liquid theory. We demonstrate that the emergence of the Fermi arcs/pockets results from the electronic structure reconstruction driven by strong electron correlations, marked by the existence of Luttinger surface enclosed by the zeros of single-particle Green's function. This work reveals the fundamental aspects of the Mottness in $\boldsymbol{\mathrm{moir\acute{e}}}$ systems and will stimulate the advance of the direct probes of the Fermi surface and quasiparticles beyond transports, such as angle-resolved photoemission spectroscopy (ARPES) and scanning tunnelling microscopy (STM) experiments.
Trump's Lawyers turn focus to classified documents case after New York verdict
Donald Trump's lawyers are preparing to redirect their focus on the charges that the former president illegally retained classified documents at his Mar-a-Lago resort in Florida,
moving on after Trump was found guilty of 34 felonies in his New York criminal trial last month.
The documents case now stands with singular importance for Trump,
🔸as it is the only case with ongoing procee…
Pseudogap with Fermi arcs and Fermi pockets in half-filled twisted transition metal dichalcogenides
Yong-Yue Zong, Zhao-Long Gu, Jian-Xin Li
https://arxiv.org/abs/2406.11374 https://arxiv.org/pdf/2406.11374
arXiv:2406.11374v1 Announce Type: new
Abstract: Twisted transition metal dichalcogenides are a new platform for realizing strongly correlated physics with high tunability. Recent transport experiments have reported the realization of a Mott insulator, its bandwidth-driven evolution to a metal, and the strange metal behavior in proximity to the transition via the tuning of a displacement field in twisted $\mathrm{WSe_2}$($\mathrm{tWSe_2}$) fixed at half filling. However, the nature of the correlated states and the related Mott physics involved in the whole process remain to be determined. Here, we unveil theoretically the evolution of the ground state of the half-filled $\boldsymbol{\mathrm{moir\acute{e}}}$ Hubbard model as applied to $\mathrm{tWSe_2}$, transiting from a pseudogap state with Fermi arcs to a 120$^\circ$ Ne$\boldsymbol{\acute{\mathrm{e}}}$l ordered Mott insulator, then to another pseudogap state with Fermi pockets, and eventually to a Fermi liquid via a Lifshitz transition. The pseudogap phases are definitively identified by the vanishing of quasiparticle weights over an extended region of the free Fermi surface, with the remaining parts forming disconnected Fermi arcs or pockets that contain well-defined quasiparticles. The loss of quasiparticle weights in the pseudogap phases indicates the breakdown of Landau's Fermi liquid theory. We demonstrate that the emergence of the Fermi arcs/pockets results from the electronic structure reconstruction driven by strong electron correlations, marked by the existence of Luttinger surface enclosed by the zeros of single-particle Green's function. This work reveals the fundamental aspects of the Mottness in $\boldsymbol{\mathrm{moir\acute{e}}}$ systems and will stimulate the advance of the direct probes of the Fermi surface and quasiparticles beyond transports, such as angle-resolved photoemission spectroscopy (ARPES) and scanning tunnelling microscopy (STM) experiments.
DAG-Plan: Generating Directed Acyclic Dependency Graphs for Dual-Arm Cooperative Planning
Zeyu Gao, Yao Mu, Jinye Qu, Mengkang Hu, Lingyue Guo, Ping Luo, Yanfeng Lu
https://arxiv.org/abs/2406.09953
This https://arxiv.org/abs/2309.14522 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…
Boosting Large-scale Parallel Training Efficiency with C4: A Communication-Driven Approach
Jianbo Dong, Bin Luo, Jun Zhang, Pengcheng Zhang, Fei Feng, Yikai Zhu, Ang Liu, Zian Chen, Yi Shi, Hairong Jiao, Gang Lu, Yu Guan, Ennan Zhai, Wencong Xiao, Hanyu Zhao, Man Yuan, Siran Yang, Xiang Li, Jiamang Wang, Rui Men, Jianwei Zhang, Huang Zhong, Dennis Cai, Yuan Xie, Binzhang Fu