# Wormholes without exotic matter: quasinormal modes, echoes and shadows

@article{Churilova2021WormholesWE, title={Wormholes without exotic matter: quasinormal modes, echoes and shadows}, author={M.S. Churilova and R. A. Konoplya and Zdeněk Stuchl{\'i}k and Alexander Zhidenko}, journal={Journal of Cosmology and Astroparticle Physics}, year={2021}, volume={2021} }

An analytical solution representing traversable asymptotically flat and symmetric wormholes was obtained without adding exotic matter in two different theories independently: in the Einstein-Maxwell-Dirac theory and in the second Randall-Sundrum brane-world model. Further, a smooth normalizable asymmetric wormhole solution has been recently obtained numerically in the Einstein-Maxwell-Dirac theory. Using the time-domain integration method we study quasinormal ringing of all these wormholes with…

## 18 Citations

### A Note on “Traversable Wormholes in Einstein–Dirac–Maxwell Theory”

- PhysicsGravitation and Cosmology
- 2021

Abstract In their Letter [Phys. Rev. Lett. 126 , 101102 (2021); arXiv: 2010.07317], J.L. Blázquez-Salcedo, C. Knoll, and E. Radu have constructed a very interesting class of wormhole solutions in…

### Traversable Wormholes in General Relativity.

- PhysicsPhysical review letters
- 2022

Blázquez-Salcedo et al. [Phys. Rev. Lett. 126, 101102 (2021)PRLTAO0031-900710.1103/PhysRevLett.126.101102] obtained asymptotically flat traversable wormhole solutions in the Einstein-Dirac-Maxwell…

### A Note on “Traversable Wormholes in Einstein–Dirac–Maxwell Theory”

- PhysicsGravitation and Cosmology
- 2021

In their Letter [Phys. Rev. Lett. 126, 101102 (2021); arXiv: 2010.07317], J.L. Blázquez-Salcedo, C. Knoll, and E. Radu have constructed a very interesting class of wormhole solutions in general…

### Echoes from asymmetric wormholes and black bounce

- Physics, Computer ScienceThe European Physical Journal C
- 2022

Analysis of time evolutions of the field perturbations in certain asymmetric wormhole and black bounce backgrounds shows that the negative regions of effective potentials are enclosed by the black hole horizons for a class of symmetric black bounce metrics, suggesting the stability of these symmetric metrics.

### From black-bounce to traversable wormhole, and beyond

- Physics
- 2021

Key results from the literature pertaining to a class of nonsingular black hole mimickers are explored. The family of candidate spacetimes is for now labelled the ‘black-bounce’ family, stemming from…

### Gravitational lensing by a Bronnikov-Kim wormhole under a weak-field approximation and in a strong deflection limit

- PhysicsPhysical Review D
- 2022

We consider gravitational lensing under a weak-ﬁeld approximation and in a strong deﬂection limit by a Bronnikov-Kim wormhole with the same metric as the one of a wormhole which has been suggested in…

### Field sources for Simpson-Visser spacetimes

- PhysicsPhysical Review D
- 2022

Simpson–Visser (SV) space-times are the simplest globally regular modiﬁcations of the Schwarzschild, Reissner-Nordstr¨om and other black hole solutions of general relativity. They smoothly…

### Epicyclic orbits in the field of Einstein–Dirac–Maxwell traversable wormholes applied to the quasiperiodic oscillations observed in microquasars and active galactic nuclei

- PhysicsThe European Physical Journal Plus
- 2021

We study the epicyclic oscillatory motion around circular orbits of the traversable asymptotically flat and reflection-symmetric wormholes obtained in the Einstein–Dirac–Maxwell theory without…

### Traversable wormholes with like-Casimir complexity supported with arbitrarily small amount of exotic matter

- Computer ScienceThe European Physical Journal C
- 2022

This work provides the redshift function of a Casimir traversable wormhole which, in combination with a non-vanishing complexity factor, leads to a traversable Wormhole with a minimum amount of exotic matter.

### Construction of a traversable wormhole from a suitable embedding function

- Computer ScienceThe European Physical Journal C
- 2022

It is obtained that the wormhole geometry can be sustained by a finite amount of exotic matter and seems to be stable under scalar perturbations.

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In [J. Blazquez-Salcedo, C. Knoll, E. Radu, Phys. Rev. Lett. 126 (2021) no.10, 101102] asymptotically flat traversable wormhole solutions were obtained in the Einstein-Dirac-Maxwell theory without…

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- 2021

Abstract In their Letter [Phys. Rev. Lett. 126 , 101102 (2021); arXiv: 2010.07317], J.L. Blázquez-Salcedo, C. Knoll, and E. Radu have constructed a very interesting class of wormhole solutions in…

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The general parametrization for spacetimes of spherically symmetric Lorentzian, traversable wormholes in an arbitrary metric theory of gravity is presented. The parametrization is similar in spirit…

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