Research Paper: An Investigation of Entanglement in Helium and Helium-like Atoms

Document Type : Research Paper

Authors

1 Associate Professor, Department of physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran

2 M. Sc. in Physics, Department of physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract

The entanglement of the helium and helium-like atoms have been studied. The calculations are performed considering the radial wave function as a linear combination of exponential functions and making use of Von Neumann entropy, Linear entropy and reduced density matrix. The coefficients and powers of the wave function were calculated using variational method and the energy and entanglement are obtained considering the optimized wave function. The results show that the entanglement tends to increase with increasing energy. The results also show that with increasing atomic number (in helium-like atoms), the electron-electron interaction becomes weaker and as a result the entanglement decreases.

Keywords

References

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History

  • Receive Date: 30 January 2020
  • Revise Date: 06 August 2020
  • Accept Date: 09 February 2021

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