Year: 1997
Type: article
Abstract: We consider an expansion of the ground-state wave function of quantum-lattice many-body systems in a basis whose states are tensor products of block-spin wave functions. We demonstrate, by applying the method to the antiferromagnetic spin-1/2 Heisenberg chain, that by selecting the most important many-body states the technique affords a severe truncation of the Hilbert space while maintaining high accuracy.
Author: P. Monthoux
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: W1977497575