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Title in Portuguese: Gauge fields in a string-cigar braneworld
Author: Costa, Francisco Wagner Vasconcelos da
Silva, José Euclides Gomes da
Veras, Diego Frankin de Souza
Almeida, Carlos Alberto Santos de
Keywords: Campos de calibre (Física)
Modelo Gherghetta–Shaposhnikov
Fluxo de Ricci
Issue Date: 2015
Publisher: Physics Letters B
Citation: COSTA, F. W. V.; SILVA, J. E. G.; VERAS, D. F. S.; ALMEIDA, C. A. S. Gauge fields in a string-cigar braneworld. Physics Letters B, Amsterdã, v. 747, p. 517-522, 2015.
Abstract: In this work, we investigate the properties of the Abelian gauge vector field in the background of a string-cigar braneworld. Both the thin and thick brane limits are considered. The string-cigar scenario can be regarded as an interior and exterior string-like solution. The source undergoes a geometric Ricci flow which is related to a variation of the bulk cosmological constant. The Ricci flow changes the width and amplitude of the massless mode at the brane core and recovers the usual string-like behavior at large distances. By means of suitable numerical methods, we attain the Kaluza–Klein (KK) spectrum for the string-like and the string-cigar models. For the string-cigar model, the KK modes are smooth near the brane and their amplitude are enhanced by the brane core. Furthermore, the analogue Schrödinger potentialis also regulated by the geometric flow.
metadata.dc.type: Artigo de Periódico
ISSN: 0370-2693
Appears in Collections:DFI - Artigos publicados em revista científica

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