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On the Weyl anomaly of 4D conformal higher spins: a holographic approach
16 Mai
16. Mai 2018
Stringtheorie Seminar

On the Weyl anomaly of 4D conformal higher spins: a holographic approach

A first attempt to derive the full (type-A and type-B) Weyl anomaly of four dimensional conformal higher spin (CHS) fields in a holographic way will be presented. Type-A and B Weyl anomaly coefficients for the whole family of 4D CHS fields from the one-loop effective action for massless higher spin (MHS) Fronsdal fields are evaluated on a 5D bulk Poincaré-Einstein metric with an Einstein metric on its conformal boundary. To gain access to the type-B anomaly coefficient it is assumed, for practical reasons, a Lichnerowicz-type coupling of the bulk Fronsdal fields with the bulk background Weyl tensor. This, although incomplete,matches the results previously found on the boundary counterpart under the assumption of factorization of the CHS higher-derivative kinetic operator into Laplacians of "partially massless" higher spins on Einstein backgrounds. Ironically this latter proposal is also incomplete.

Referent/Referentin

Prof. Rodrigo Aros/Universidad Andres Bello, Santiago de Chile

Veranstalter

Institut für Theoretische Physik

Termin

16. Mai 2018
14:15 Uhr - 16:00 Uhr

Ort

Physikgebäude
Geb.: 3701
Raum: 268
Großer Semiarraum
Appelstraße 2
30167 Hannover
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