It is a general belief that the only possible way to consistently deform the Pauli-Fierz action, also changing the gauge algebra, is general relativity. Here we show that a different type of deformation exists in three dimensions if one allows for PT non-invariant terms. The new gauge algebra is different from that of diffeomorphisms. Furthermore, this deformation can be generalized to the case of a collection of massless spin-2 fields. In this case it describes a consistent interaction among them.

An exotic theory of massless spin-two fields in three dimensions

GUALTIERI, Leonardo
2001

Abstract

It is a general belief that the only possible way to consistently deform the Pauli-Fierz action, also changing the gauge algebra, is general relativity. Here we show that a different type of deformation exists in three dimensions if one allows for PT non-invariant terms. The new gauge algebra is different from that of diffeomorphisms. Furthermore, this deformation can be generalized to the case of a collection of massless spin-2 fields. In this case it describes a consistent interaction among them.
Boulanger, N; Gualtieri, Leonardo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/1148203
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