Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-12-11
Phys.Rev.D77:106008,2008
Physics
High Energy Physics
High Energy Physics - Theory
53 pages
Scientific paper
10.1103/PhysRevD.77.106008
Analyzing the one-loop partition function, we discuss possible Kaluza-Klein (KK) states in the orbifold compactification of the heterotic string theory, toward the application to the threshold correction. The KK massive states associated with (relatively) large extra dimensions can arise only in non-prime orbifolds. The GSO projection condition by a shift vector $V^I$ is somewhat relaxed above the compactification scale 1/R. We also present the other condition on Wilson line $W$, $P\cdot W={\rm integer}$. With the knowledge of the partition function, we obtain the threshold corrections to gauge couplings, which include the Wilson line effects. We point out the differences in string and field theoretic orbifolds.
Kim Jihn E.
Kyae Bumseok
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