Weak gravity conjecture, black branes and violations of universal thermodynamics relation

Sadeghi, J.; Pourhassan, B.; Gashti, S. Noori; Upadhyay, Sudhaker

doi:10.1016/j.aop.2022.169168

Cited by 11 publications

(8 citation statements)

References 40 publications

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“…As it is known in the literature, a new idea has been put forward as a swampland program to check theories coupled to gravity, to check the consistency of quantum gravity, and finally, a proof for string theory. Recently, ones have done lots of work on this field [20][21][22][23][24][25][26][27][28][29][30]. Due to the special conditions of string theory and the fact that its testing and experimental investigations seem a bit difficult, this idea has been proposed to test and investigate various concepts of cosmology.…”

Section: Weak Gravity Conjecturementioning

confidence: 99%

Strong Cosmic Censorship in light of Weak Gravity Conjecture for Charged Black Holes

Sadeghi¹,

Alipour²,

Gashti³

2023

Preprint

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In this paper, we investigate the strong cosmic censorship conjecture (SCC) for charged black holes in the de Sitter space by considering the weak gravity conjecture (WGC). Using analytical methods, we find that the SCC is preserved for dS-charged black holes with respect to some restriction qQ ≫ 1 and r + ≥ Q with the help of the WGC condition viz q m ≥ 1 for scalar fields. Where q, m are the charge and mass of the scalar field, and r + , Q determine the radius of the outer event horizon and the charge of the black hole, respectively. In that case, when the (WGC) is valid, SCC will definitely be satisfied for the dS-charged black holes. On the other hand, the SCC is violated when the WGC is not satisfied. Also, we examined the RN-dS charged black hole in the extremality state and found that SCC can be violated with the condition Λr 2 + = 1.

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Section: Weak Gravity Conjecturementioning

confidence: 99%

Strong Cosmic Censorship in light of Weak Gravity Conjecture for Charged Black Holes

Sadeghi¹,

Alipour²,

Gashti³

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…As it is known in the literature, a new idea has been put forward as a swampland program to check theories coupled to gravity, the consistency of quantum gravity and finally, a proof for string theory. Recently, ones have done lots of work on this field [20][21][22][23][24][25][26][27][28][29][30]. Due to the special conditions of string theory and the fact that its testing and experimental investigations seem a bit difficult, this idea has been proposed to test and investigate various concepts of cosmology.…”

Section: Weak Gravity Conjecturementioning

confidence: 99%

“…Thusly, it gives an upper bound on the mass of these charged states. The WGC comprises of some parts: the electric and the magnetic electric-WGC: As indicated by a quantum hypothesis, we have the following condition [20][21][22][23][24][25][26][27][28][29][30],…”

Section: Jhep02(2023)236mentioning

confidence: 99%

“…One more understanding of this conjecture is that the limitations region shows that scale force determines stronger than the gravity on this mode -so subsequently is called WGC. This is an identical equation since it expects that electromagnetic force is stronger gravitational force [20][21][22][23][24][25][26][27][28][29][30],…”

Section: Jhep02(2023)236mentioning

confidence: 99%

“…Charged BHs should fulfill an extremality breaking point to stay away from the presence of exposed singularities, as shown by the weak cosmic censorship (W CC). For a given charge Q, this super bound shows that the this super bound shows that the mass M of the BHs should be more noteworthy than the charge [20][21][22][23][24][25][26][27][28][29][30],…”

Section: Jhep02(2023)236mentioning

confidence: 99%

See 2 more Smart Citations

Strong cosmic censorship in light of weak gravity conjecture for charged black holes

Sadeghi

Alipour

Gashti

2023

J. High Energ. Phys.

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In this paper, we investigate the strong cosmic censorship conjecture (SCC) for charged black holes in the de Sitter space by considering the weak gravity conjecture (WGC). Using analytical methods, we find that the SCC is preserved for dS-charged black holes with respect to some restriction qQ » 1 and r+≥ Q with the help of the WGC condition viz $$ \frac{q}{m} $$ q m ≥ 1 for scalar fields. Where q, m are the charge and mass of the scalar field, and r+, Q determine the radius of the outer event horizon and the charge of the black hole, respectively. In that case, when the (WGC) is valid, SCC will definitely be satisfied for the dS-charged black holes. On the other hand, the SCC is violated when the WGC is not satisfied. Also, we examined the RN-dS charged black hole in the extremality state and found that SCC can be violated with the condition $$ \Lambda {r}_{+}^2 $$ Λ r + 2 = 1.

show abstract

Universality on thermodynamic relation with corrections in de Sitter black holes

Ko,

Gwak

2024

J. High Energ. Phys.

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We herein investigate the universal relation proposed by Goon and Penco in de Sitter black holes with electric charge or angular momentum. Our analysis focuses on the cosmological horizon, which only exists in de Sitter and Nariai spacetimes. Because the relation is given in a general case, the overall relationship may be valid. However, we elucidate the details of the relation, highlighting distinctions from those of (anti-)de Sitter black holes while affirming the validity of the relation. Furthermore, based on our analysis of Schwarzschild-de Sitter, Reissner-Nordström-de Sitter, and Kerr-de Sitter black holes, we demonstrate the universality of the thermodynamic relation in de Sitter black holes.

show abstract

Weak gravity conjecture, black branes and violations of universal thermodynamics relation

Cited by 11 publications

References 40 publications

Strong Cosmic Censorship in light of Weak Gravity Conjecture for Charged Black Holes

Strong Cosmic Censorship in light of Weak Gravity Conjecture for Charged Black Holes

Strong cosmic censorship in light of weak gravity conjecture for charged black holes

Universality on thermodynamic relation with corrections in de Sitter black holes

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