Exportar Publicação

A publicação pode ser exportada nos seguintes formatos: referência da APA (American Psychological Association), referência do IEEE (Institute of Electrical and Electronics Engineers), BibTeX e RIS.

Exportar Referência (APA) 
Aniceto, P. & Rocha, J. V. (2017). Dynamical black holes in low-energy string theory. Journal of High Energy Physics.
Exportar Referência (IEEE) 
A. P. and J. M. Rocha,  "Dynamical black holes in low-energy string theory", in Journal of High Energy Physics, 2017
Exportar BibTeX 
@article{p.2017_1715015784311,
	author = "Aniceto, P. and Rocha, J. V.",
	title = "Dynamical black holes in low-energy string theory",
	journal = "Journal of High Energy Physics",
	year = "2017",
	volume = "",
	number = "",
	doi = "10.1007/JHEP05(2017)035",
	url = "http://www.scopus.com/inward/record.url?eid=2-s2.0-85019073085&partnerID=MN8TOARS"
}
Exportar RIS 
TY  - JOUR
TI  - Dynamical black holes in low-energy string theory
T2  - Journal of High Energy Physics
AU  - Aniceto, P.
AU  - Rocha, J. V.
PY  - 2017
SN  - 1126-6708
DO  - 10.1007/JHEP05(2017)035
UR  - http://www.scopus.com/inward/record.url?eid=2-s2.0-85019073085&partnerID=MN8TOARS
AB  - We investigate time-dependent spherically symmetric solutions of the four-dimensional Einstein-Maxwell-axion-dilaton system, with the dilaton coupling that occurs in low-energy effective heterotic string theory. A class of dilaton-electrovacuum radiating solutions with a trivial axion, previously found by Guven and Yoruk, is re-derived in a simpler manner and its causal structure is clarified. It is shown that such dynamical spacetimes featuring apparent horizons do not possess a regular light-like past null infinity or future null infinity, depending on whether they are radiating or accreting. These solutions are then extended in two ways. First we consider a Vaidya-like generalisation, which introduces a null dust source. Such spacetimes are used to test the status of cosmic censorship in the context of low-energy string theory. We prove that — within this family of solutions — regular black holes cannot evolve into naked singularities by accreting null dust, unless standard energy conditions are violated. Secondly, we employ S-duality to derive new time-dependent dyon solutions with a nontrivial axion turned on. Although they share the same causal structure as their Einstein-Maxwell-dilaton counterparts, these solutions possess both electric and magnetic charges.

ER  -