TY - CHAP
T1 - Partition function and spectrum
AU - Choi, Kang Sin
AU - Kim, Jihn E.
PY - 2006
Y1 - 2006
N2 - We have seen in Subsect. 5.3.4 that the only modular invariant lattices in sixteen dimensions are those of E8×E8 and SO(32), while the ten dimensional spacetime part is independently modular invariant. But if we relax this condition such that it is modular invariant in the entire 26 dimensions, we have a more general theory. One fruitful result was the discovery of SO(16)×SO(16) heterotic string without supersymmetry [1], but its applicability is much more profound. This leads to a huge class of orbifold models which we discuss in this book. Furthermore, taking into account the right movers also, we can have a more general modular invariance, leading to the asymmetric orbifold.
AB - We have seen in Subsect. 5.3.4 that the only modular invariant lattices in sixteen dimensions are those of E8×E8 and SO(32), while the ten dimensional spacetime part is independently modular invariant. But if we relax this condition such that it is modular invariant in the entire 26 dimensions, we have a more general theory. One fruitful result was the discovery of SO(16)×SO(16) heterotic string without supersymmetry [1], but its applicability is much more profound. This leads to a huge class of orbifold models which we discuss in this book. Furthermore, taking into account the right movers also, we can have a more general modular invariance, leading to the asymmetric orbifold.
UR - http://www.scopus.com/inward/record.url?scp=33749169686&partnerID=8YFLogxK
U2 - 10.1007/3-540-32764-9_7
DO - 10.1007/3-540-32764-9_7
M3 - Chapter
AN - SCOPUS:33749169686
SN - 3540327630
SN - 9783540327639
T3 - Lecture Notes in Physics
SP - 185
EP - 202
BT - Quarks and Leptons From Orbifolded Superstring
ER -