# Self-force on a static scalar charge in a class of traversable wormhole spacetimes

### Abstract

We consider the problem of computing the contribution of the self-force to the total force needed to keep a scalar charge at rest in a two-parameter family of static and spherically-symmetric wormhole spacetimes introduced by Konoplya and Zhidenko. Such wormholes belong to the more general Morris-Thorne class of traversable wormholes. This self-force is computed numerically by mode-sum regularization approach, and we investigate its dependence on redshift function (parametrized by *p*) determining the strength of tidal forces in the wormhole spacetime. We found that for certain range of *p* values, the self-force can be attractive or repulsive depending on the location of the scalar charge.

*Proceedings of the Samahang Pisika ng Pilipinas*

**37**, SPP-2019-3C-06 (2019). URL: https://paperview.spp-online.org/proceedings/article/view/SPP-2019-3C-06.