Bose-Einstein condensation of deconfined spinons in two dimensions
| Autor: | Adam Iaizzi, Oleg P. Sushkov, Anders W. Sandvik, Harley D. Scammell |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Strongly Correlated Electrons (cond-mat.str-el) Quantum Monte Carlo FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Spinon law.invention Magnetic field Theoretical physics Condensed Matter - Strongly Correlated Electrons law 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Gauge theory Quantum field theory 010306 general physics 0210 nano-technology Quantum Bose–Einstein condensate |
| Popis: | The transition between the N\'{e}el antiferromagnet and the valence-bond solid state in two dimensions has become a paradigmatic example of deconfined quantum criticality, a non-Landau transition characterized by fractionalized excitations (spinons). We consider an extension of this scenario whereby the deconfined spinons are subject to a magnetic field. The primary purpose is to identify the exotic scenario of a Bose-Einstein condensate of spinons. We employ quantum Monte Carlo simulations of the \mbox{$J$-$Q$} model with a magnetic field and perform a quantum field theoretic analysis of the magnetic field and temperature dependence of thermodynamic quantities. The combined analysis provides compelling evidence for the Bose-Einstein condensation of spinons and also demonstrates an extended temperature regime in which the system is best described as a gas of spinons interacting with an emergent gauge field. Comment: Published in Phys. Rev. B March 11, 2020 |
| Databáze: | OpenAIRE |
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