An invariant of null spinor fields

Bogdan Niţǎ; Ivor Robinson

doi:10.1088/0264-9381/17/10/309

An invariant of null spinor fields

Bogdan Niţǎ, Ivor Robinson

Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

A differential invariant is found for null fields of arbitrary spin. For null gravitational fields, the invariant is identified as that of Bičác and Pravda; its derivation from the Bel-Robinson tensor is given; and a simple expression is found for its value in null perturbations of flat spacetimes.

Original language	English
Article number	309
Pages (from-to)	2149-2152
Number of pages	4
Journal	Classical and Quantum Gravity
Volume	17
Issue number	10
DOIs	https://doi.org/10.1088/0264-9381/17/10/309
State	Published - 21 May 2000

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title = "An invariant of null spinor fields",

abstract = "A differential invariant is found for null fields of arbitrary spin. For null gravitational fields, the invariant is identified as that of Bi{\v c}{\'a}c and Pravda; its derivation from the Bel-Robinson tensor is given; and a simple expression is found for its value in null perturbations of flat spacetimes.",

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AB - A differential invariant is found for null fields of arbitrary spin. For null gravitational fields, the invariant is identified as that of Bičác and Pravda; its derivation from the Bel-Robinson tensor is given; and a simple expression is found for its value in null perturbations of flat spacetimes.

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An invariant of null spinor fields

Abstract

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