Year: 2026
Type: preprint
Abstract: This study explores static and spherically symmetric wormhole configurations in an extended formulation of symmetric teleparallel gravity governed by $f(Q,L_m)=α(-Q)+βL_m $ and $f(Q,L_m)= -Q+L_m^α $ (where $Q$ is the non-metricity scalar, $L_m$ is the matter Lagrangian, and $α, β$ are constants). By varying the action with respect to the metric, we obtain the corresponding field equations. We conclude that the linear $f(Q,L_m)=α(-Q)+βL_m$ framework successfully supports physically realistic wormholes without requiring extreme energy condition violations. It has been demonstrated that spacetime solutions violating both the radial and lateral null energy conditions in general relativity can nevertheless satisfy the NEC in $f(Q, L_m)$ gravity. Within non-linear $f(Q,L_m)$ gravity, non-exotic asymptotically flat wormhole solutions are derived using linear and asymptotically linear equations of state. Our results open new avenues to link modified gravity models with the observable astrophysical traits of exotic spacetimes.
Source: arXiv (Cornell University)
Authors: Rastgoo, Sara, Parsaei, Foad
Institution: Sirjan University of Technology
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7223329370