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Updated: Jan 7, 2026
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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A quantum field theory of polarization propagators
Mariano T Colombo Jofré1, Gustavo A Aucar1
1Facultad de Ciencias Exactas y Naturales y Agrimensura, Instituto de Modelado e Innovación Tecnológica, Universidad Nacional del Nordeste, Av. Libertad 5460, W3404AAS Corrientes, Argentina.
The Journal of Chemical Physics
|January 2, 2026
Summary
We developed a quantum field theory for molecular systems. This formalism reveals hard-core boson quasiparticles, linking electronic excitations to quantum field propagators and entanglement.
Area of Science:
- Quantum chemistry
- Theoretical physics
- Molecular dynamics
Background:
- Previous work established polarization propagators via path-integral formalism.
- An effective model for quantum electrodynamics (QED) effects was proposed.
Purpose of the Study:
- To present a field-theoretical quantum formalism for molecular electronic systems.
- To describe space-time response to external perturbations.
- To explore the nature of excitations in these systems.
Main Methods:
- Field-theoretical quantum formalism.
- Path-integral formalism.
- Analysis of one-electron excitation and de-excitation operators.
Main Results:
- Emergence of hard-core boson quasiparticles as quantum field excitations.
- Formal correspondence between electronic excitations and virtual boson quasiparticles.
- Direct link established between quasiparticles and polarization propagators via Feynman propagator.
Conclusions:
- The formalism provides a new perspective on molecular electronic response.
- Hard-core boson quasiparticles offer insights into quantum electrodynamics effects.
- Potential connection identified between quasiparticles and entanglement of molecular orbital excitations.
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