Spatially controlled fabrication of single NV centers in IIa HPHT diamond. (arXiv:1911.12429v1 [physics.app-ph])

Single NV centers in HPHT IIa diamond are fabricated by helium implantation through lithographic masks. The concentrations of created NV centers in different growth sectors of HPHT are compared quantitatively. It is shown that the purest {001} growth sector (GS) of HPHT diamond allows to create groups of single NV centers in predetermined locations. The…

Continuously-tunable light-matter coupling in optical microcavities with 2D semiconductors. (arXiv:1911.12438v1 [physics.app-ph])

A theoretical variation between the two distinct light-matter coupling regimes, namely weak and strong coupling, becomes uniquely feasible in open optical Fabry-P\’erot microcavities with low mode volume, as discussed here. In combination with monolayers of transition-metal dichalcogenides (TMDCs) such as WS2, which exhibits a large exciton oscillator strength and binding energy, the room-temperature observation of…

Investigating the refractive index sensitivity of U-bent fiber optic sensors using ray optics. (arXiv:1911.12440v1 [physics.optics])

Geometrically modified fiber optic sensors (FOS), particularly U-bent FOS, have gained significant attention due to their remarkably high refractive index (RI) and evanescent wave absorbance (EWA) sensitivity, as well as their ergonomic design and ease in handling. In this study, we present a theoretical model for the U-bent FOS probes, to predict the sensor behavior…

Serverless seismic imaging in the cloud. (arXiv:1911.12447v1 [cs.DC])

This abstract presents a serverless approach to seismic imaging in the cloud based on high-throughput containerized batch processing, event-driven computations and a domain-specific language compiler for solving the underlying wave equations. A 3D case study on Azure demonstrates that this approach allows reducing the operating cost of up to a factor of 6, making the…

Robust, accurate, and efficient: quantum embedding using the Huzinaga level-shift projection operator for complex systems. (arXiv:1911.12449v1 [physics.chem-ph])

Wave function (WF) in density functional theory (DFT) embedding methods provide a framework for performing localized, high accuracy WF calculations on a system, while not incurring the full computational cost of the WF calculation on the full system. In order to effectively partition a system into localized WF and DFT subsystems, we utilize the Huzinaga…

Nonlinear Effective Masses Schr\”odinger Equation with Harmonic Oscillator. (arXiv:1911.12477v1 [nlin.PS])

With a nonlinear effective mass, we study the quantum particles described by the generalized Schr\”odinger equation in a harmonic oscillator. Using the Gauss-Hermite functions, an infinite dimensional discrete dynamical system and its stationary solutions are obtained. Furthermore, we also study the perturbation on any eigenmode of the corresponding potential under the influence of nonlinear effective…

On parameters of orders of quartic fields and essential pairs — extended version. (arXiv:1911.12453v1 [math.NT])

Classes of pairs of ternary quadratic forms parametrize quartic rings by a result of Bhargava. We give an algorithm for finding a pair of ternary quadratic forms that parametrize a given order of a quartic field. We examine a new technique, essential pairs, for obtaining parameters of orders of quartic fields from a number field…

Some Algebraic Properties of Lecture Hall Polytopes. (arXiv:1911.12459v1 [math.CO])

In this note, we investigate some of the fundamental algebraic and geometric properties of $s$-lecture hall simplices and their generalizations. We show that all $s$-lecture hall order polytopes, which simultaneously generalize $s$-lecture hall simplices and order polytopes, satisfy a property which implies the integer decomposition property. This answers one conjecture of Hibi, Olsen and Tsuchiya.…

Large independent sets in triangle-free cubic graphs: beyond planarity. (arXiv:1911.12471v1 [math.CO])

Every $n$-vertex planar triangle-free graph with maximum degree at most $3$ has an independent set of size at least $\frac{3}{8}n$. This was first conjectured by Albertson, Bollob\’as and Tucker, and was later proved by Heckman and Thomas. Fraughnaugh and Locke conjectured that the planarity requirement could be relaxed into just forbidding a few specific nonplanar…