Phys. Rev. D
 2018
DOI: 10.1103/physrevd.97.044009
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Action growth for black holes in modified gravity

Lorenzo Sebastiani
1
,
Luciano Vanzo
2
,
Sergio Zerbini
3

Abstract: The general form of the action growth for a large class of static black hole solutions in modified gravity which includes F (R)-gravity models is computed. The cases of black hole solutions with non constant Ricci scalar are also considered, generalizing the results previously found and valid only for black holes with constant Ricci scalar. An argument is put forward to provide a physical interpretation of the results, which seem tightly connected with the generalized second law of black hole thermodynamics

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Cited by 24 publications

(18 citation statements)
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“…Our main concern was to compute finite term of the on-shell action. It is contrary to the most studies in the literature where the main concern was to compute the growth rate of the complexity (see for example [53][54][55][56][57][58][59][60][61][62][63][64][65][66]).…”
Section: Discussionmentioning
confidence: 92%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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“…Our main concern was to compute finite term of the on-shell action. It is contrary to the most studies in the literature where the main concern was to compute the growth rate of the complexity (see for example [53][54][55][56][57][58][59][60][61][62][63][64][65][66]).…”
Section: Discussionmentioning
confidence: 92%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
show abstract
“…To the best of our knowledge, [1065] was the first to introduce the non-polynomial gravity approach. Models of these type have later been considered in various works (particularly in the search for regular BHs), see for instance [1066][1067][1068][1069][1070][1071][1072][1073][1074][1075].…”
Section: Dst Black Holementioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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“…[83][84][85] Before closing this section, we shall present some discussions on our results. Firstly, we argue that Ξ n [X 𝜇 ] can be defined as the induced field excited by Hawking radiation based on the fact that the fluctuation of worldsheet can be caused by Hawking radiation as the probe string is in black hole environment, even though the physical quantities related to Hawking radiation are not reflected in (37). It is noticed that besides Hawking radiation, the fluctuations may also be triggered by other mechanisms, such as a scalar field on the worldsheet as a defect, [86] but here we take more care of the worldsheet fluctuation itself, which means that fields Ξ n [X 𝜇 ] are only curve-dependent.…”
Section: Further Study From the Perspective Of String Field Theorymentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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