We construct a seven-dimensional brane world in a slice of AdS7, where the boundary matter content is fixed by the cancellation of anomalies. The seven-dimensional minimal N = 2 gauged supergravity is compactified on the orbifold S/Z2, and the supersymmetric bulk-boundary Lagrangian is consistently derived for boundary vector and hypermultipets up to fermionic bilinear terms. Anomaly cancellati...

Higher derivative terms in M-theory are investigated by applying the Noether method. Cancellation of variations under the local supersymmetry is examined to the order linear in F by a computer program. Structure of R 4 terms is uniquely determined and exactly matches with one-loop effective terms in type IIA superstring theory. A part of R 3 F 2 terms is also determined.

We introduce a Bredon motivic cohomology theory for smooth schemes defined over a field and equipped with an action by a finite group. These cohomology groups are defined for finite dimensional representations as the hypercohomology of complexes of equivariant correspondences in the equivariant Nisnevich topology. We generalize the theory of presheaves with transfers to the equivariant setting ...

We check some consistency conditions for the D9-D9 system in type I string theory. The gravitational anomaly and gauge anomaly for SO(n)×SO(m) gauge symmetry are shown to be cancelled when n−m = 32. In addition, we find that a string theory with USp(n) × USp(m) gauge symmetry also satisfies the anomaly cancellation conditions. After tachyon condensation, the theory reduces to a tachyon-free USp...

We check some consistency conditions for the D9-D9 system in type I string theory. The gravitational anomaly and gauge anomaly for SO(n)×SO(m) gauge symmetry are shown to be cancelled when n − m = 32. In addition, we find that a string theory with USp(n) × USp(m) gauge symmetry also satisfies the anomaly cancellation conditions. After tachyon condensation, the theory reduces to a tachyon-free U...

In this work we evaluate four state-of-the-art acoustic feedback cancellation systems for hearing aid applications. We show that significant improvements in cancellation performance can be made over traditional systems by allowing small alterations in the loudspeaker signal and a computational complexity increase by a factor of 2 − 3. The evaluation is based on a listening test and objective as...

An algorithm for detection and cancellation of sidetone oscillations in mobile phones is presented. The sidetone signal is represented by a 4 order LPC polynomial, whose root structure is analysed by a computationally efficient twostage approach. In difference to LMS based adaptive filters this approach offers a fast and reliable detection of evolving oscillations. A notch filter with small ban...

It is shown that the twisted sector spectrum, as well as the associated Chern-Simons interactions, can be determined on M -theory orbifold fixed planes that do not admit gravitational anomalies. This is demonstrated for the seven-planes arising within the context of an explicit R × S/Z2 × T /Z2 orbifold, although the results are completely general. Local anomaly cancellation in this context is ...