(1+1)-DIMENSIONAL LARGE-N QCD COUPLED TO ADJOINT FERMIONS

被引:111
作者
BHANOT, G
DEMETERFI, K
KLEBANOV, IR
机构
[1] THINKING MACHINES CORP, CAMBRIDGE, MA 02142 USA
[2] PRINCETON UNIV, JOSEPH HENRY LABS, PRINCETON, NJ 08544 USA
关键词
D O I
10.1103/PhysRevD.48.4980
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider (1 + 1)-dimensional QCD coupled to Majorana fermions in the adjoint representation of the gauge group SU(N). Pair creation of partons (fermion quanta) is not suppressed in the large-N limit, where the glueball-like bound states become free. In this limit the spectrum is given by a linear light-cone Schrodinger equation, which we study numerically using the discretized light-cone quantization. We find a discrete spectrum of bound states, with the logarithm of the level density growing approximately linearly with the mass. The wave function of a typical excited state is a complicated mixture of components with different parton numbers. A few low-lying states, however, are surprisingly close to being eigenstates of the parton number, and their masses can be accurately calculated by truncated diagonalizations.
引用
收藏
页码:4980 / 4990
页数:11
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