Vol. 6, Issue 8, Part E (2020)

Abstract
Modelling can be done by means of theory, laboratory prototypes, or numerical methods and various techniques often these theoretical models often use, especially in complicated many-body problems, macroscopic equations to describe the physical phenomenon at hand, thereby neglecting many microscopic details of the system. Numerical methods usually lack this problem, and they are normally inexpensive in comparison with laboratory experiments. Numerical methods also provide efficient benchmarks for theoretical models. They can address details of complex phenomena that can be difficult for theory as well as for experiments.