On manifestly sp(2) invariant formulation of quadratic higher spin Lagrangians
K.B. Alkalaev

TL;DR
This paper develops a manifestly sp(2) invariant Lagrangian formulation for free higher spin bosonic fields in AdS(d), accommodating infinite multiplets as gauge connections of higher spin algebras.
Contribution
It introduces a new frame-like Lagrangian approach that maintains sp(2) invariance and handles infinite field multiplets in higher spin theories.
Findings
Provides a consistent sp(2) invariant Lagrangian framework.
Enables description of infinite multiplets as gauge connections.
Facilitates analysis of higher spin gauge theories in AdS space.
Abstract
The Lagrangian frame-like formulation of free higher spin symmetric bosonic AdS(d) fields is given within a manifestly sp(2) invariant framework. It is designed to deal with infinite multiplets of fields appearing as gauge connections of the higher spin algebras.
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