# New Constructions in Local Quantum Physics

Bert Schroer
January 14, 2005
Among several ideas which arose as consequences of modular localization there are two proposals which promise to be important for the classification and construction of QFTs. One is based on the observation that wedge-localized algebras may have particle-like generators with simple properties and the second one uses the structural simplification of wedge algebras in the holographic lightfront projection. Factorizable $d=1+1$ models permit to analyse the interplay between particle-like aspects and chiral field properties of lightfront holography.