Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous density fluctuations in a random $t$-$J$ model   A previous work (Joshi et al., arXiv:1912.08822) found a deconfined critical
point at non-zero doping in a $t$-$J$ model with all-to-all and random hopping
and spin exchange, and argued for its relevance to the phenomenology of the
cuprates. We extend this model to include all-to-all and random density-density
interactions of mean-square strength $K$. In a fixed realization of the
disorder, and for specific values of the hopping, exchange, and density
interactions, the model is supersymmetric; but, we find no supersymmetry after
independent averages over the interactions. Using the previously developed
renormalization group analysis, we find a new fixed point at non-zero $K$.
However, this fixed point is unstable towards the previously found fixed point
at $K=0$ in our perturbative analysis. We compute the exponent characterizing
density fluctuations at both fixed points: this exponent determines the
spectrum of electron energy-loss spectroscopy.

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The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: cs
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys