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pro vyhledávání: '"Ng, P. S."'
In this paper, we present three-dimensional (3D) Particle-In-Cell (PIC) simulations to study the stability of 2D Bernstein-Greene-Kruskal (BGK) modes in a magnetized plasma with a finite background magnetic field. The simulations were performed using
Externí odkaz:
http://arxiv.org/abs/2410.16585
Autor:
Hertkorn, Jens, Stürmer, Philipp, Mukherjee, Koushik, Ng, Kevin S. H., Uerlings, Paul, Hellstern, Fiona, Lavoine, Lucas, Reimann, Stephanie, Pfau, Tilman, Klemt, Ralf
We theoretically investigate elementary excitations of dipolar quantum gases across the superfluid to supersolid phase transition in a toroidal trap. We show how decoupled first sound, second sound, and Higgs modes emerge by following their origin fr
Externí odkaz:
http://arxiv.org/abs/2404.12384
Publikováno v:
Phys. Plasmas 31, 042302 (2024)
We present two dimensional (2D) particle-in-cell (PIC) simulations of 2D Bernstein-Greene-Kruskal (BGK) modes, which are exact nonlinear steady-state solutions of the Vlasov-Poisson equations, on a 2D plane perpendicular to a background magnetic fiel
Externí odkaz:
http://arxiv.org/abs/2311.08613
Distributed training is the de facto standard to scale up the training of Deep Neural Networks (DNNs) with multiple GPUs. The performance bottleneck of distributed training lies in communications for gradient synchronization. Recently, practitioners
Externí odkaz:
http://arxiv.org/abs/2309.13254
Autor:
Ng, Samuel S. H., Croshaw, Jeremiah, Walter, Marcel, Wille, Robert, Wolkow, Robert, Walus, Konrad
Recent research interest in emerging logic systems based on quantum dots has been sparked by the experimental demonstration of nanometer-scale logic devices composed of atomically sized quantum dots made of silicon dangling bonds (SiDBs), along with
Externí odkaz:
http://arxiv.org/abs/2211.08698
Autor:
Ng, C. S.
A new model, inspired by the structure of galactic disks, for three-dimensional Bernstein-Greene-Kruskal (BGK) modes in a plasma with a uniform finite background magnetic field is presented. These modes are exact nonlinear solutions of the steady-sta
Externí odkaz:
http://arxiv.org/abs/2207.11632
Gradient compression (GC) is a promising approach to addressing the communication bottleneck in distributed deep learning (DDL). However, it is challenging to find the optimal compression strategy for applying GC to DDL because of the intricate inter
Externí odkaz:
http://arxiv.org/abs/2205.14465
Robust automated design tools are crucial for the proliferation of any computing technology. We introduce the first automated design tool for the silicon dangling bond quantum dot computing technology, which is an extremely versatile and flexible sin
Externí odkaz:
http://arxiv.org/abs/2204.06288
The ion temperature of the magnetospheres of Jupiter and Saturn was observed to increase substantially from about 10 to 30 planet radii. Different heating mechanisms have been proposed to explain such observations, including a heating model for Jupit
Externí odkaz:
http://arxiv.org/abs/2110.08767
Autor:
Voisin, B., Ng, K. S. H., Salfi, J., Usman, M., Wong, J. C., Tankasala, A., Johnson, B. C., McCallum, J. C., Hutin, L., Bertrand, B., Vinet, M., Valanoor, N., Simmons, M. Y., Rahman, R., Hollenberg, L. C. L., Rogge, S.
Strain is extensively used to controllably tailor the electronic properties of materials. In the context of indirect band-gap semiconductors such as silicon, strain lifts the valley degeneracy of the six conduction band minima, and by extension the v
Externí odkaz:
http://arxiv.org/abs/2109.08540