HS in flat spacetime: the effective action method

Znanstveni rad - Izvorni znanstveni rad

• Autor: Loriano Bonora
• Autor: Maro Cvitan; MBZ: 239520
• Autor: Predrag Dominis Prester
• Autor: Stefano Giaccari
• Autor: Tamara Štemberga
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

This is the first paper in a series of three dealing with HS theories in flat spacetime. It is divided in three parts. The first part is an elaboration on the method of effective action, initiated in a previous paper. We study the properties of correlators of currents in the free fermion coupled to external higher spin (HS) potentials, and develop techniques for their explicit calculation. In particular we show how they can be calculated via ordinary Feynman diagram techniques. We also introduce the concept of curved 𝐿∞ algebra and show how it can be realized in the context of the fermion model. In part II we compare the results of the scalar model and those of the fermion model (coupled to HS fields). We show that the HS field formulation coming from the scalar model is the ‘square’ of the one ensuing from the fermion model. Finally, in part III, we analyse the possible obstructions that one may meet in constructing the effective action: these are the analogues of anomalies in ordinary gauge theories. We provide explicit and compact formulas of the latter.

• Ključne riječi (engleski): higher spin gravity theories; quantum field theory; effective action
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: European Physical Journal C
• Brojčani podaci: vol. 79, br. 3, 258
• p-ISSN: 1434-6044
• e-ISSN: 1434-6052
• DOI: https://doi.org/10.1140/epjc/s10052-019-6660-4
• URN:NBN: urn:nbn:hr:217:335809
• Datum objave publikacije: 2019
• Projekt: Šifra: UIP-2013-11-8946; Naziv (hrvatski): Gravitacija i narušenje pariteta; Kratica: GRAPARION; Voditelj: Maro Cvitan; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: UIP
• URL dokumenta: https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6660-4
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © The Author(s) 2019. Received: 20 November 2018; Accepted: 7 February 2019; Published online: 21 March 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3.
• Datum i vrijeme pohrane: 2020-03-01 19:09:42