Stochastic Variational Approach to Small Atoms and Molecules Coupled to Quantum Field Modes

• URL: http://arxiv.org/abs/2108.11229v1
• Date: Wed, 25 Aug 2021 13:40:42 GMT
• Title: Stochastic Variational Approach to Small Atoms and Molecules Coupled to Quantum Field Modes
• Authors: Alexander Ahrens, Chenhang Huang, Matt Beutel, Cody Covington, and Kalman Varga
• Abstract summary: We present a variational calculation (SVM) of energies and wave functions of few particle systems coupled to quantum fields in cavity QED. Examples for a two-dimensional trion and confined electrons as well as for the He atom and the Hydrogen molecule are presented.
• Score: 55.41644538483948
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this work, we present a stochastic variational calculation (SVM) of energies and wave functions of few particle systems coupled to quantum fields in cavity QED. The light-matter coupled system is described by the Pauli-Fierz Hamiltonian. The spatial wave function and the photon spaces are optimized by a random selection process. Examples for a two-dimensional trion and confined electrons as well as for the He atom and the Hydrogen molecule are presented showing that the light-matter coupling drastically changes the electronic states.

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