31 citations · 69 across the 6 of their papers we have counts for
6 papers · 1 filter
On anomalies and fermionic unitary operators
Masaki Okada, Shutaro Shimamura, Yuji Tachikawa +1
We point out that fermionic unitary operators which anticommute among themselves appear in various situations in quantum field theories with anomalies in the Hamiltonian formalism.…
Global anomalies in gauged supergravities
Katrin Becker, Ergin Sezgin, David Tennyson +1
There exists a rare class of R-symmetry gauged supergravities in six dimensions with gauge group , where is semisimple with rank greater than one, and…
Type I anomaly cancellation revisited
Saghar S. Hosseini, Yuji Tachikawa, Hao Y. Zhang
We revisit the issue of how the perturbative and global fermion anomaly of Type I string theory in ten dimensions is cancelled by the Green-Schwarz mechanism using the RR fields. T…
Non-invertible symmetries act locally by quantum operations
Masaki Okada, Yuji Tachikawa
Non-invertible symmetries of quantum field theories and many-body systems generalize the concept of symmetries by allowing non-invertible operations in addition to more ordinary in…
On a -valued discrete topological term in 10d heterotic string theories
Yuji Tachikawa, Hao Y. Zhang
We show that the low-energy effective actions of two ten-dimensional supersymmetric heterotic strings are different by a -valued discrete topological term even after…
On a class of selection rules without group actions in field theory and string theory
Justin Kaidi, Yuji Tachikawa, Hao Y. Zhang
We discuss a class of selection rules which i) do not come from group actions on fields, ii) are exact at tree level in perturbation theory, iii) are increasingly violated as the l…