# Deconfined Quantum Critical Point in a Dissipative Spin-1/2 Chain

Source: [feeds.aps.org](http://link.aps.org/doi/10.1103/lmlm-2mxw) · 2026-11-09 · Physics
Page: https://themorning.science/story/deconfined-quantum-critical-point-in-a-dissipative-spin-1-2-chain-dd1fe7b581394b17
Kind: research · Impact: low

## In brief

- Lu, Cui and Guo study a spin-1/2 J−Q3 chain in an open quantum spin system.
- The chain combines an antiferromagnetic Heisenberg exchange with a competing multispin interaction.
- The authors argue that open quantum spin systems offer a previously unexplored route to realizing deconfined quantum criticality.

## Why it matters

It proposes dissipation as a possible route to deconfined quantum criticality, extending a condensed-matter topic that is usually studied in closed systems.

## Coverage

- [Deconfined Quantum Critical Point in a Dissipative Spin-1/2 Chain](http://link.aps.org/doi/10.1103/lmlm-2mxw) — feeds.aps.org, 2026-11-09

Tags: deconfined-quantum-criticality, open-quantum-systems, spin-chains, quantum-magnetism, quantum-criticality

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science