Massively Parallel Computation of Accurate Densities for N-body Dark Matter Simulations using the Phase-Space-Element Method

Posted by klaurent Stanford

Kavli Affiliate: Ralf Kaehler | Summary:This paper presents an accurate density computation approach for large dark matter simulations, based on a recently introduced phase-space tessellation technique and designed for massively parallel, heterogeneous cluster architectures. We discuss a memory efficient construction of an oct-tree structure to sample the mass densities with locally adaptive resolution, according to […]


Continue.. Massively Parallel Computation of Accurate Densities for N-body Dark Matter Simulations using the Phase-Space-Element Method

Probing microplasticity in small scale FCC crystals via Dynamic Mechanical Analysis

Posted by klaurent Caltech

Kavli Affiliate: Julia R. Greer | Summary:In small-scale metallic systems, collective dislocation activity has been correlated with size effects in strength and with a step-like plastic response under uniaxial compression and tension. Yielding and plastic flow in these samples is often accompanied by the emergence of multiple dislocation avalanches. Dislocations might be active pre-yield, but […]


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A pair of Calabi-Yau manifolds from a two parameter non-Abelian gauged linear sigma model

Posted by klaurent Tokyo

Kavli Affiliate: Kentaro Hori | Summary:We construct and study a two parameter gauged linear sigma model with gauge group $(U(1)^2times O(2))/mathbb Z_2$ that has a dual model with gauge group $(U(1)^2times SO(4))/mathbb Z_2$. The model has two geometric phases, three hybrid phases and one phase whose character is unknown. One of the geometric phases is […]


Continue.. A pair of Calabi-Yau manifolds from a two parameter non-Abelian gauged linear sigma model