Wormhole geometries and energy conditions in linear and non-linear f(Q,Lm) gravity
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, Lm 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,Lm)=α(−Q)+βLm 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, Lm) gravity. Within non-linear f(Q,Lm) 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.
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BibTeX
@misc{rastgoo2026wormhole,
title = {{Wormhole geometries and energy conditions in linear and non-linear $f(Q,L_m)$ gravity}},
author = {Sara Rastgoo and Foad Parsaei},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.30224},
eprint = {2610.30224},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.30224},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Wormhole geometries and energy conditions in linear and non-linear f(Q,L_m) gravity
AU - Sara Rastgoo
AU - Foad Parsaei
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2610.30224
UR - https://arxiv.org/abs/2610.30224
AB - 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.
ER -