Work

Charged wormholes in (anti-)de Sitter spacetime

Year: 2026

Type: article

Abstract: We present a family of charged, traversable wormhole solutions in the presence of a cosmological constant. In de Sitter spacetime, two types of wormhole throats can exist–referred to as typical and cosmological throat–located at small and large radial values, respectively. In anti-de Sitter spacetime, the throat geometry allows for positive, zero, or negative curvature, enabling the possibility of an infinite throat area. We analyze the flare-out condition, a key requirement for the existence of traversable wormholes, which imposes constraints on the equation of state parameters governing the supporting matter. These solutions are shown to be of Petrov type D . Furthermore, we examine radial geodesics of null and timelike particles. In the de Sitter case, particles traverse the wormhole, passing from one throat to the other. In contrast, in the anti-de Sitter case, particles exhibit recurrent oscillatory motion between two asymptotic regions, cyclically disappearing and reappearing across the throats.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2025.140145

Authors: Hyeong-Chan Kim, Wonwoo Lee

Institutions: Korea National University of Transportation, Sogang University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Research Foundation, Ministry of Education, National Research Foundation of Korea

Awards: G5691170189, G6159057712, G6343539346, G7746742029