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Instability of fermionic, vectorial, and tensorial fields in curved spacetimes

Grant number: 15/26438-8
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): June 01, 2016
Effective date (End): February 29, 2020
Field of knowledge:Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
Principal researcher:Daniel Augusto Turolla Vanzella
Grantee:Caio Cesar Holanda Ribeiro
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil


The "vacuum awakening" effect has been extensively studied in the context of scalar fields. In particular, its connection with spontaneous scalarization has been established in the astrophysical scenario of compact objects, showing that vacuum fluctuations of a quantized scalar field seed, after decoherence, classical perturbations which then evolve to the scalarized configuration. This project aims at analyzing the occurrence of this sort of instability but now for fields associated to particles with spin, like the Dirac and Weyl fields (spin 1/2), the Maxwell and Proca fields (spin 1), and the graviton field (spin 2). This analysis is not only natural to complement previous results but it is also necessary in order to properly evaluate the extent of the implications of these instabilities in realistic scenarios. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIBEIRO, CAIO C. HOLANDA; VANZELLA, DANIEL A. TUROLLA. Analogues of gravity-induced instabilities in anisotropic metamaterials. PHYSICAL REVIEW RESEARCH, v. 2, n. 1 MAR 9 2020. Web of Science Citations: 0.
CAMARGO, G. H. S.; DE LORENCI, V. A.; RIBEIRO, C. C. H.; RODRIGUES, F. F. Vacuum induced dispersions on the motion of test particles in D+1 dimensions. Physical Review D, v. 100, n. 6 SEP 23 2019. Web of Science Citations: 0.
DE LORENCI, V. A.; RIBEIRO, C. C. H. Remarks on the influence of quantum vacuum fluctuations over a charged test particle near a conducting wall. Journal of High Energy Physics, n. 4 APR 9 2019. Web of Science Citations: 1.
CAMARGO, G. H. S.; DE LORENCI, V. A.; RIBEIRO, C. C. H.; RODRIGUES, F. F.; SILVA, M. M. Vacuum fluctuations of a scalar field near a reflecting boundary and their effects on the motion of a test particle. Journal of High Energy Physics, n. 7 JUL 30 2018. Web of Science Citations: 2.

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