Higher-Spin Gauge Theories in Three Spacetime Dimensions

Campoleoni, Andrea; Fredenhagen, Stefan

doi:10.1007/978-3-031-59656-8_2

Lecture Notes in Physics

2024

DOI: 10.1007/978-3-031-59656-8_2

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Higher-Spin Gauge Theories in Three Spacetime Dimensions

Andrea Campoleoni,

Stefan Fredenhagen

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Interactions of massless fermionic fields in three dimensions

Fredenhagen,

Lausch,

Mkrtchyan

2024

Phys. Rev. D

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All independent interaction vertices involving massless (Fang-Fronsdal) fermions in three dimensions are classified, completing the classification of interactions of massless fields of any spin. Similar to the bosonic case, we get no independent vertices at quartic or higher order in the fields involving fields with spin s≥3/2 and cubic vertices only for spins satisfying triangle inequalities, apart from the cases involving (matter) fields with spin s≤1. Different from the bosonic cases, we get only one vertex for each triple of spins with two Majorana fermions and one boson, which is parity even (odd) when the sum of the spins of all fields involved is odd (even). When the two Majorana fermions are identical, their coupling to an odd-spin boson is trivialized. We comment on the nontrivial holographic dictionary relating these vertices to conformal field theory correlators in two dimensions. Published by the American Physical Society 2024

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Interactions of massless fermionic fields in three dimensions

Fredenhagen,

Lausch,

Mkrtchyan

2024

Phys. Rev. D

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show abstract

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Higher-Spin Gauge Theories in Three Spacetime Dimensions

Cited by 1 publication

References 202 publications

Interactions of massless fermionic fields in three dimensions

Interactions of massless fermionic fields in three dimensions

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