Yukawa Couplings involving Excited Twisted Sector States for {bf Z}_Mtimes {bf Z}_N Orbifolds
classification
✦ hep-th
keywords
twistedsectorstatescouplingsexcitedorbifoldstimesyukawa
read the original abstract
A study is made for ${\bf Z}_M\times {\bf Z}_N$ orbifolds of the modification of the form of the twisted sector Yukawa couplings when some of the states involved are excited twisted sectors rather than twisted sector ground states.
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