Quantum Entanglement in Many-Particle Systems
Year: 2002
Type: preprint
Abstract: For a system of many identical particles, the meaning of entanglement is fundamentally different from distinguishable particles, because any operation should be symmetrized over all particles and there is the pre-condition that the spatial wavefunctions overlap. It is a basis-dependent property. It can be naturally defined in the particle number representation as non-factorization of number states in different modes of a given basis. As examples, we discuss fermion and boson gases, quantum Hall states, Bose-Einstein condensation and BCS superconducting state. Entanglement in BCS superconducting state provides a quantitative characterization of its fundamental difference with the Bose-Einstein condensation in the simplest case.
Source: arXiv (Cornell University)
Author: Yu Shi
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2965240329