English

Wormholes in $f(Q,T)$ gravity with different matter Lagrangian density

General Relativity and Quantum Cosmology 2026-05-21 v1

Abstract

This study explores asymptotically flat wormhole solutions in f(Q,T)=αQ+βTf(Q,T)=\alpha Q+ \beta T gravity, expanding upon our prior work (arXiv:2602.00527v1) with matter Lagrangian density, Lm=PL_m=-P . Here, we examine the implications of employing Lm=TLm=-T and Lm=ρL_m=\rho. The field equations, derived via action variation, share a common general structure but are fundamentally dictated by the parameters α\alpha and β\beta through the coefficients AiA_i. Solutions with linear and asymptotically linear equation of state are explored. We conclude that non-exotic asymptotically flat wormhole solutions exist for all considered matter Lagrangian densities. A key outcome is the demonstration that different LmL_m choices enable the same shape function to be supported by varied fluid configurations, or vice versa, identical fluids to yield different geometries. The energy conditions and physical characteristics of these solutions are shown to be distinct and critically dependent on the selected LmL_m.

Keywords

Cite

@article{arxiv.2605.20980,
  title  = {Wormholes in $f(Q,T)$ gravity with different matter Lagrangian density},
  author = {Sodabe Nasirimoghadam and Foad Parsaei and Sara Rastgoo},
  journal= {arXiv preprint arXiv:2605.20980},
  year   = {2026}
}

Comments

13 pages, 6 figures