2016
DOI: 10.1142/s0218271816410054
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Abstract: We review some properties of black hole structures appearing in gravity with a massless scalar field, with both minimal and nonminimal coupling. The main properties of the resulting cold black holes are described. The study of black holes in scalar-gravity systems is extended to k-essence theories, and some examples are explicitly worked out. In these cases, even while the existence of horizons is possible, the metric regularity requirement on the horizon implies either a cold black type structure or a singula… Show more

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Cited by 8 publications
(5 citation statements)
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“…In this section, we discuss the construction of new exact solutions of DHOST theories starting from a naked singularity seed solution of the Einstein-Scalar system. As mentioned earlier, the no hair theorem prevents the canonical minimally coupled scalar field in GR from having black hole solution with a scalar hair [71][72][73]. Black holes are obtained at the price of working with a phantom field [74][75][76][77][78].…”
Section: Disformal Transformation Of Einstein-scalar Seed Solutionmentioning
confidence: 99%
See 1 more Smart Citation
“…In this section, we discuss the construction of new exact solutions of DHOST theories starting from a naked singularity seed solution of the Einstein-Scalar system. As mentioned earlier, the no hair theorem prevents the canonical minimally coupled scalar field in GR from having black hole solution with a scalar hair [71][72][73]. Black holes are obtained at the price of working with a phantom field [74][75][76][77][78].…”
Section: Disformal Transformation Of Einstein-scalar Seed Solutionmentioning
confidence: 99%
“…In this section, we discuss the construction of new exact solutions of DHOST theories starting from a naked singularity seed solution of the massless Einstein-Scalar system. As mentioned earlier, provided the self-interacting potential is semi-positive, the no hair theorem prevents the canonical minimally coupled scalar field in GR from having asymptotically flat black hole solution with a scalar hair [70][71][72]. Preserving the minimal coupling, black holes can be obtained by relaxing asymptotic flatness [73], working with non semi-positive self-interacting potential [74,75], as well as working with a phantom field [76][77][78].…”
Section: Jcap02(2020)023mentioning
confidence: 99%
“…Exact solutions possessing spherical symmetry were one of the main branches of this activity since the time of the classical works by Schwarzschild [1], Tolman [2], Oppenheimer and Volkoff [3]. The study of static spherically symmetric solutions of the Einstein equations in the presence of a massless scalar field has rather a long history [4][5][6][7][8][9][10][11][12][13][14][15][16] (see also [17] as a review). In particular, in paper [13], a duality be-tween spherically symmetric static solutions in the presence of a massless scalar field and the Kantowski-Sachs cosmological models [18], which instead possess hyperbolic symmetry was studied.…”
Section: Introductionmentioning
confidence: 99%
“…More influential are Brans-Dicke scalar-tensor gravities [7] which are also based on the same feature; the nonminimal coupling dynamics (see [6] for both historical and technical details.). Among various and several examples, some earlier applications of scalar-tensor theories have included gravitational waves [8], and later black hole structures [9] as well as attempts to explain the accelerating expansion of the universe [10]. At the classical level, models such as (1) have been used as an attempt to incorporate the spontaneous symmetry breaking in a curved background that leads to the scale of gravity [4].…”
Section: Introductionmentioning
confidence: 99%