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Transition between algebraic and Z2 quantum spin liquids at large N
- Source :
- Physical Review B. 98
- Publication Year :
- 2018
- Publisher :
- American Physical Society (APS), 2018.
-
Abstract
- We present a field theory description of a quantum phase transition in two spatial dimensions between a $\text{U}(1)$ algebraic spin liquid with $N$ flavors of gapless two-component Dirac fermionic spinons and a gapped ${\mathbb{Z}}_{2}$ spin liquid. This transition is driven by spinon pairing and concomitant Higgsing of the emergent U(1) gauge field. For sufficiently large $N$, we find a quantum critical point with non-Gaussian exponents that is stable against instanton proliferation. We compute critical exponents using either $1/N$ or $\ensuremath{\epsilon}$ expansions, and give estimates of the critical value of $N$ below which the quantum critical point disappears.
- Subjects :
- Physics
Quantum phase transition
Instanton
High Energy Physics::Lattice
Critical phenomena
01 natural sciences
Spinon
010305 fluids & plasmas
Quantum critical point
0103 physical sciences
Condensed Matter::Strongly Correlated Electrons
Gauge theory
Quantum spin liquid
010306 general physics
Critical exponent
Mathematical physics
Subjects
Details
- ISSN :
- 24699969 and 24699950
- Volume :
- 98
- Database :
- OpenAIRE
- Journal :
- Physical Review B
- Accession number :
- edsair.doi...........fe315ad77a4331a553bf2a7b1d27545e