Self-dual lattices can be used to construct simple conformal field theories for “compactified”
degrees of freedom in string theory. While these are by no means the most general …

We review the use of simple currents in constructing modular invariant partition functions
and the problem of resolving their fixed points. We present some new results, in particular …

If the results of the first LHC run are not betraying us, many decades of particle physics are
culminating in a complete and consistent theory for all nongravitational physics: the standard …

It is shown how our previous work on lattice constructions of ten-dimensional heterotic strings
can be applied to four dimensions. The construction is based on an extension of Narain's …

We present algorithms for the group independent reduction of group theory factors of Feynman
diagrams. We also give formulas and values for a large number of group invariants in …

Modular invariant conformal field theories with just one primary field and central chargec=24
are considered. It has been shown previously that if the chiral algebra of such a theory …

One-loop modular invariant heterotic and type II closed string theories are proved to be
anomaly free, apart from terms proportional to TrF 2 − TrR 2 . It is shown why this conclusion …

We calculate the heterotic string one-loop diagram in 2n + 2 dimensions with one external B
μν and n external gravitons and/or gauge bosons. The result is a modular integral over the …

We show how the fusion rules can be used to associate with every rational conformal field
theory a discrete group, the center. The center is generated by primary fields having unique …

Background Misconceptions about ADHD stigmatize affected people, reduce credibility of
providers, and prevent/delay treatment. To challenge misconceptions, we curated findings with …