arXiv subjects

Kyeong Min Kim

Publications and source records attributed to Kyeong Min Kim.

3 recordsLinked to original sources

arXiv2022

Toy model of particle scattering theory

The one dimensional probabilistic toy model of particle scattering theory is proposed. The toy model version of scattering probability is proved to be equal to the hypervolume of a n-dimensional figure. The solution for any n-particle toy model is presented as a contour integral, through Mellin trasnformation. The method of solving the contour integral is discussed. A nontrivial symmetry of this toy model, the invariance on initial position of the particles, is observed.

math.GM↗

arXiv2022

Regions exhibiting stationary values of average cross section

The problem of maximizing the average cross section through a point within a shape is introduced. This idea is extended into arbitrary dimensions. However, the average cross sectional volume cannot be maximized unless the cross sections pass through the centroid of the shape. Therefore, we focus on the shapes with stationary values of average cross section. A novel formula for average cross section in any dimension is presented. The equation of the stationary shape is derived and the general characteristics are discussed through algebraic solution, numerical analysis, and interpretation with graphical display. The special properties of the stationary shapes in 2, 3, and 5 dimension is examined.

math.GM↗

arXiv2018

Measuring granular flow through a funnel with a force sensor

This paper presents an apparatus to measure the flow of granular matter through a funnel with a force sensor. In addition to being easily reproducible, our proposed method enhances measurement accuracy from the popular method that uses a stopwatch. We notice, however, that our proposed setup induces an unwelcome force that confounds force sensor readings. This issue is discussed, and its significance on measurement accuracy is evaluated through theoretical and experimental work.

cond-mat.soft↗