Formal Construction

Kang Sin Choi, Jihn E. Kim

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Modular invariance of the partition function is an important guiding principle of orbifold construction. In the construction of heterotic string in Sect. 6.3.3, we have required separate modular invariance in the sixteen internal and the ten dimensional spacetime dimensions. This yielded E8 ×E8 and SO(32) heterotic strings. If we relax this to be invariance in the entire 26 dimensions, we may have a more general theory.

Original languageEnglish
Title of host publicationLecture Notes in Physics
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages22
StatePublished - 2020

Publication series

NameLecture Notes in Physics
ISSN (Print)0075-8450
ISSN (Electronic)1616-6361

Bibliographical note

Publisher Copyright:
© 2020, Springer Nature Switzerland AG.


Dive into the research topics of 'Formal Construction'. Together they form a unique fingerprint.

Cite this