Heterotic M(atrix) strings and their interactions
Abstract
Following a recent proposal of Dijkgraaf, Verlinde and Verlinde, we show that the M(atrix) theory compactified on {S_{1}}/{Z_{2}} provides us with a nonperturbative description of the secondquantized lightcone heterotic string. This socalled heterotic M(atrix) string theory is defined by a twodimensional (8,0) supersymmetric chiral gauge theory with gauge group SO(2 N) in the large N limit. We argue that at the strong coupling fixed point the chiral gauge theory flows to a (8,0) superconformal field theory defined via the SN symmetric product space orbifold. We show that the leading order correction to the strong coupling expansion corresponds to a unique irrelevant operator of scaling dimension three and describes the joining and splitting cubic interactions of the lightcone heterotic string. We also speculate on a M(atrix) description of bosonic strings via dimensional reduction of d = 26 YangMills theory.
 Publication:

Nuclear Physics B
 Pub Date:
 February 1997
 DOI:
 10.1016/S05503213(97)004288
 arXiv:
 arXiv:hepth/9704158
 Bibcode:
 1997NuPhB.502..170R
 Keywords:

 High Energy Physics  Theory
 EPrint:
 20 pages, section 3.1 expanded, more references added