Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gapless chiral spin liquid in a kagome Heisenberg model   Motivated by recent experiments on the Heisenberg S=1/2 quantum spin liquid
candidate material kapellasite, we classify all possible chiral (time-reversal
symmetry breaking) spin liquids with fermionic spinons on the kagome lattice.
We obtain the phase diagram for the physically relevant extended Heisenberg
model, comparing the energies of a wide range of microscopic variational wave
functions. We propose that, at low temperature, kapellasite exhibits a gapless
chiral spin liquid phase with spinon Fermi surfaces. This two-dimensional state
inherits many properties of the nearby one-dimensional phase of decoupled
anti-ferromagnetic spin chains, but also shows some remarkable differences. We
discuss the spin structure factors and other physical properties.

19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
3
The categories of this paper are: physics