Modular invariance and discrete torsion on orbifolds

@article{citeulike:2727247, abstract = {We show that fermionic left-right level matching is necessary and sufficient to guarantee modular invariance to 1-loop order in orbifold compactification of heterotic string. We also discuss the possibility of turning on discrete torsion on orbifolds.}, author = {Vafa, Cumrun }, citeulike-article-id = {2727247}, doi = {http://dx.doi.org/10.1016/0550-3213(86)90379-2}, journal = {Nuclear Physics B}, keywords = {orbifold}, month = {September}, number = {3-4}, pages = {592--606}, posted-at = {2008-04-28 05:10:57}, priority = {2}, title = {Modular invariance and discrete torsion on orbifolds}, url = {http://dx.doi.org/10.1016/0550-3213(86)90379-2}, volume = {273}, year = {1986} }

TY - JOUR ID - citeulike:2727247 L3 - citeulike-article-id:2727247 TI - Modular invariance and discrete torsion on orbifolds JF - Nuclear Physics B VL - 273 IS - 3-4 SP - 592 EP - 606 N2 - We show that fermionic left-right level matching is necessary and sufficient to guarantee modular invariance to 1-loop order in orbifold compactification of heterotic string. We also discuss the possibility of turning on discrete torsion on orbifolds. KW - orbifold AU - Vafa, Cumrun PY - 1986/09/01/ UR - http://dx.doi.org/10.1016/0550-3213(86)90379-2 ER -