Abstract
We review basic properties of reducible higher-spin multiplets, called triplets, and demonstrate how they naturally appear as part of the spectrum of String Field Theory in the tensionless limit. We show how in the frame-like formulation the triplet fields are endowed with the geometrical meaning of being components of higher-spin vielbeins and connections and present actions describing their free dynamics.
Highlights
IntroductionThe construction of a consistent interacting theory of higher-spin fields is one of the oldest long standing problems in theoretical physics of particles and fields
It is a pleasure to write this contribution on the occasion of the anniversary of Jiri Niederle
In other words the triplets form reducible Poincare group multiplets of massless higher-spin particles. They naturally arise in a tensionless limit of String Field Theory [4, 5, 6, 7, 8, 9, 10] as sets of three tensor fields
Summary
The construction of a consistent interacting theory of higher-spin fields is one of the oldest long standing problems in theoretical physics of particles and fields. Jiri Niederle has concentrated, in particular, on studying electro-magnetic interactions of massive higherspin fields, which, reveal major issues of the generic problem [2, 3]. It would be very interesting and very important for the further development of this subject to compare the results obtained in the construction of higher-spin interactions with the structure of a known example of consistent higher-spin field theory which is String Theory.
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