Quantum

Entanglement of superpositions in zero-energy subspace: insights from stabilizer theory

Read full article at source ↗

Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 16/10/2026, 04:13:25 UTC.

Briefings

Research published in October 2026 using stabilizer theory characterizes zero-energy eigenstates in spin-1/2 chains with periodic boundaries. The study identifies that superpositions of these states exhibit a volume law minimum entanglement entropy at fixed interaction ranges, while also suggesting new constructions of exact eigenstates including separable zero-energy configurations.

Key points

• Zero-energy eigenstates in spin-1/2 chains with periodic boundary conditions can be constructed from entangled dimers.
• The minimum entanglement entropy between two halves of the chain follows a volume law at fixed interaction ranges.

Context

This work investigates superpositions of exact zero-energy eigenstates in geometrically local spin-1/2 chains, utilizing stabilizer theory and polynomial methods to characterize the subspace spanned by these states.

Limitations

The study is limited to spin-1/2 chains with periodic boundary conditions and focuses on zero-energy states; findings regarding non-zero energy states remain unverified.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 16/10/2026, 05:05:49 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

View archived briefing on IPFS
bafybeiekbedmkb7g377q6eynva7leib7hgnf55nqy7s3h56a7dd2ohqndu