## 4 Citations

### Spherical inhomogeneous solutions of Einstein and scalar–tensor gravity: A map of the land

- Physics
- 2021

### Brans-Dicke analogue of the Roberts geometry

- Mathematics, Physics
- 2020

We report a new one-parameter family of spherically symmetric, inhomogeneous, and time-dependent solutions of the vacuum Brans-Dicke field equations which are conformal to the Roberts scalar field…

### Junction conditions in scalar–tensor theories

- PhysicsClassical and Quantum Gravity
- 2020

We analyze junction conditions at a null or non-null hypersurface in a large class of scalar–tensor theories in arbitrary dimensions. After showing that the metric and a scalar field must be…

### Quantum imploding scalar fields

- PhysicsRoyal Society Open Science
- 2018

Here what happens in canonical quantum gravity is investigated and extrapolation and approximation of two minispace Hamiltonian systems indicates that the quantum mechanical wave function can be finite at the origin.

## References

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Static spherically symmetric uncoupled scalar space–times have no event horizon and a divergent Kretschmann singularity at the origin of the coordinates. The singularity is always present so that…

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- Physics
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The following theorem is established. Every zero-mass scalar field which is gravitationally coupled, static and asymptotically flat, becomes singular at a simply-connected event horizon. In the…

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It has been well known since the 1970s that stationary black holes do not generically support scalar hair. Most of the no-hair theorems which support this depend crucially upon the assumption that…

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- Mathematics, PhysicsPhysical review letters
- 2017

We consider time-dependent solutions of the Einstein-Maxwell equations using anti-de Sitter (AdS) boundary conditions, and provide the first counterexample to the weak cosmic censorship conjecture in…

### Violating weak cosmic censorship in AdS$_4$

- Mathematics, Physics
- 2017

We consider time-dependent solutions of the Einstein-Maxwell equations using anti-de Sitter (AdS) boundary conditions, and provide the first counterexample to the weak cosmic censorship conjecture in…

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- Physics
- 1994

An exact one parameter () family of solutions representing scalar field collapse is shown to exhibit a type of critical behaviour which has been discussed by Choptuik. The three possible evolutions…

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- Physics
- 1994

I present an account of the discovery of critical behaviour in spherically-symmetric general-relativistic collapse of a scalar field, φ. Using an adaptive mesh-refinement algorithm in conjunction…

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- Mathematics
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The antidual part of the Riemann tensor R/sub ijkm/ in four dimensions has been studied by Rainich and Einstein. It is reducible to the contracted curvature tensor R/sub ik/. The selfdual part of…