Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Undoubled Chiral Fermions on a Lattice   We analyze the dynamics of an $SU_L(2)\otimes U_R(1)$ chiral theory on the
lattice with a strong multifermion coupling. It is shown that no spontaneous
symmetry breaking occurs; the ``spectator'' fermion $\psi_R$ is a free mode;
doublers are decoupled as massive Dirac fermions consistently with the chiral
symmetries. In 1+1 dimension, we show that the right-handed three-fermion state
disappears at the threshold and an undoubled left-handed chiral fermion remains
in the continuum limit.

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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: stat
3
The categories of this paper are: physics
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The categories of this paper are: cmp-lg
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The categories of this paper are: cond-mat
2
The categories of this paper are: math
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The categories of this paper are: math-ph