Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-masking of spontaneous symmetry breaking in layer materials   We study d-wave Fermi surface deformations (dFSD), the so-called Pomeranchuk
instability, on bilayer and infinite-layer square lattices. Since the order
parameter of the dFSD has Ising symmetry, there are two stacking patterns along
the c axis: (+,+) and (+,-). We find that, as long as the c axis dispersion is
finite at the saddle points of the in-plane band dispersion, the (+,-) stacking
is usually favored independently on the details of interlayer coupling,
yielding no macroscopic anisotropy. The dFSD provides unique spontaneous
symmetry breaking that is self-masked in layer materials.

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The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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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: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex