Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-10-21
Nucl.Phys. B711 (2005) 367-391
Physics
High Energy Physics
High Energy Physics - Theory
24 pages; v4: Minor corrections, added references, version accepted for publication in NPB
Scientific paper
10.1016/j.nuclphysb.2005.01.017
We develop the BRST approach to Lagrangian formulation for all massless half-integer higher spin fields on an arbitrary dimensional flat space. General procedure of Lagrangian construction describing the dynamics of fermionic field with any spin is given. It is shown that in fermionic case the higher spin field model is a reducible gauge theory and the order of reducibility grows with the value of spin. No off-shell constraints on the fields and the gauge parameters are used. We prove that in four dimensions after partial gauge fixing the Lagrangian obtained can be transformed to Fang-Fronsdal form however, in general case, it includes the auxiliary fields and possesses the more gauge symmetries in compare with Fang-Fronsdal Lagrangian. As an example of general procedure, we derive the new Lagrangian for spin 5/2 field containing all set of auxiliary fields and gauge symmetries of free fermionic higher spin field theory.
Buchbinder Ioseph L.
Krykhtin V. A.
Pashnev Anatoly
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