Contribution to a book

Quark line disconnected matrix elements of an operator, such as the axial current, are difficult to compute on the lattice. The standard method uses a stochastic estimator of the operator, which is generally very noisy. [...]

Recently Arm introduced a new instruction set called Scalable Vector Extension (SVE), whichsupports vector lengths up to 2048 bits. While SVE hardware will not be generally available untilabout 2021, we believe that future SVE-based architectures will have great potential for LatticeQCD. [...]

Root architectural models (RSA) have become important tools in root research and plantphenotyping for studying root traits, processes, and interactions with the environment. Themodels have been used to simulate how various root traits and processes influence waterand nutrient uptake. [...]

Results of benchmarking tests on gate-based quantum computers and quantum annealers are compared to results obtained with simulators of these new computing technologies. Simulating the behavior of (physical models) of quantum computing devices on supercomputers does not only shed light on the physical processes that are involved in the computation but is also useful for testing some applications..

A new self-injection scheme is proposed for the laser wakefield accelerator in the nonlinear (cavity) regime using a pair of matched, copropagating laser pulses which yields a pC electron bunch. By tuning their relative delay and intensity, the subsequent betatron radiation energy can be considerably $(\times 3)$ enhanced compared to the single pulse scheme for the same total energy. [...]