Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A model of a 2d non-Fermi liquid with SO(5) symmetry, AF order, and a
  d-wave SC gap   Demanding a consistent quantum field theory description of spin 1/2 particles
near a circular Fermi surface in 2d leads to a unique fermionic theory with
relevant quartic interactions which has an emergent Lorentz symmetry and
automatically has an Sp(4) = SO(5) internal symmetry. The free theory has
resistivity linear in temperature. The interacting theory has a low-energy
interacting fixed point and is thus a non-Landau/Fermi liquid.
Anti-ferromagnetic (AF) and superconducting (SC) order parameters are bilinears
in the fields and form the 5-dimensional vector representation of SO(5). An AF
phase occurs at low doping which terminates in a first order transition. We
incorporate momentum dependent scattering of Cooper pairs near the Fermi
surface to 1-loop and derive a new kind of SC gap equation beyond mean field
with a d-wave gap solution. Taking into account the renormalization group (RG)
scaling properties near the low energy fixed point, we calculate the complete
phase diagram as a function of doping, which shows some universal geometric
features. The d-wave SC dome terminates on the over-doped side at the fixed
point of the RG,which is a quantum critical point. Optimal doping is estimated
to occur just below 3/2\pi^2. The critical temperature for SC at optimal doping
is set mainly by the universal nodal Fermi velocity and lattice spacing, and is
estimated to average around 140K for LSCO. The pseudogap energy scale is
identified as the RG scale of the coupling.

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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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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: mtrl-th
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga