Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deconfined quantum criticality and emergent symmetry in SrCu2(BO3)2   The deconfined quantum critical point (DQCP) represents a paradigm shift in
theories of quantum matter, presenting a "beyond Landau" scenario for
order-order transitions. Its experimental realization, however, has remained
elusive. Here we demonstrate by high-pressure 11B NMR measurements on the
quantum magnet SrCu2(BO3)2 that the magnetic field induced plaquette-singlet to
antiferromagnetic transition above 1.8 GPa is proximate to a DQCP. We find a
weak first-order transition between the two phases at a remarkably low
temperature, Tc~0.07 K. Above Tc we observe quantum critical scaling at the
highest pressure, 2.4 GPa. We explain the low first-order Tc values by a
DQCP-induced emergent O(3) symmetry that is broken in the coexistence state.
Our findings take the DQCP from a theoretical concept to a concrete
experimental platform.

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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: eess
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an