Quantum probes of timelike naked singularities in the weak eld regime of f(R) global monopole spacetime
Küçük Resim Yok
Tarih
2014
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springerlink
Erişim Hakkı
Attribution-NonCommercial 3.0 United States
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
Özet
The formation of a naked singularity in f(R) global monopole spacetime is considered in view of quantum mechanics. Quantum test elds obeying the Klein-Gordon, Dirac and Maxwell equations are used to probe the classical timelike naked singularity developed at r = 0. We prove that the spatial derivative operator of the elds fails to be essentially self-adjoint. As a result, the classical timelike naked singularity formed in f(R) global monopole spacetime remains quantum mechanically singular when it is probed with quantum elds having di erent spin structures. Pitelli and Letelier (Phys. Rev. D 80, 104035, 2009) had shown that for quantum scalar (spin 0) probes the general relativistic global monopole singularity remains intact. For speci c modes electromagnetic (spin 1) and Dirac eld (spin 1=2) probes, however, we show that the global monopole spacetime behaves quantum mechanically regular. The admissibility of this singularity is also incorporated within the Gubser's singularity conjecture.
Açıklama
Anahtar Kelimeler
f(R) Gravity, Quantum singularities, Global Monopole
Kaynak
Journal of High Energy Physics - Arxiv
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
Sayı
Künye
Gürtuğ, Ö., Halilsoy, M. ve Mazharimousavi, S. H. (2014). Quantum probes of timelike naked singularities in the weak eld regime of f(R) global monopole spacetime. Journal of High Energy Physics - Arxiv. s. 1-14.