Singularities in Low Energy d = 4 Heterotic String and Brans-Dicke Theories

1993/09/08 by S. Kalyana Rama, Rama, S. Kalyana
Mathematics · Physics and Astronomy · #Algebraic Geometry and Number Theory #Astrophysics (astro-ph) #Black Holes and Theoretical Physics #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Nonlinear Waves and Solitons

paper · pdf · doi:10.48550/arxiv.hep-th/9309046

openalex publication_date 1993/09/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present the static, spherically symmetric solutions of the low energy d = 4 string. They form a simple generalisation of the Schwarzschild solution and describe the gravitational field of a spherical star in perturbative string theory. If the Robertson parameter γ is different from one, these solutions describe singular objects with naked singularities at their horizons, and whose Hawking temperature is infinite. These objects might represent ``massive remnants'', the end states of black holes. Our analysis also implies that Brans-Dicke theory has a naked singularity. Invoking cosmic censorship conjecture will rule out Brans-Dicke theory.

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