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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.09310 |
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| _version_ | 1866909814281469952 |
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| author | Li, Guo-He Fang, Yeqi Wu, Yuchi Tao, Jun |
| author_facet | Li, Guo-He Fang, Yeqi Wu, Yuchi Tao, Jun |
| contents | In this study, we investigate wormhole solutions within the framework of $F(R,T)$ gravity coupled to an axion-dilaton system and explore the inflation. Based on the Giddings-Strominger (GS) and expanding wormhole solutions in asymptotically flat Euclidean spacetime, the matter-geometry coupling term induces complex dynamical oscillations and reduces the Euclidean action, which enhances the nucleation probability of wormholes. Furthermore, we apply this theoretical setup to a "wineglass" half-wormhole model in Euclidean Anti-de Sitter (EAdS) spacetime and derive a constraint on the coupling parameter. This constraint introduces an unstable maximum in scalar potential, altering the probability distribution of initial states and the evolution of universes from high-potential regions. This method increases the probability of long-lasting inflation, offering a potential pathway to reconciling the no-boundary proposal with astronomical observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_09310 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Wormhole Solutions and Pre-inflationary Epoch in $F(R, T)$ Gravity with Axion Fields Li, Guo-He Fang, Yeqi Wu, Yuchi Tao, Jun General Relativity and Quantum Cosmology In this study, we investigate wormhole solutions within the framework of $F(R,T)$ gravity coupled to an axion-dilaton system and explore the inflation. Based on the Giddings-Strominger (GS) and expanding wormhole solutions in asymptotically flat Euclidean spacetime, the matter-geometry coupling term induces complex dynamical oscillations and reduces the Euclidean action, which enhances the nucleation probability of wormholes. Furthermore, we apply this theoretical setup to a "wineglass" half-wormhole model in Euclidean Anti-de Sitter (EAdS) spacetime and derive a constraint on the coupling parameter. This constraint introduces an unstable maximum in scalar potential, altering the probability distribution of initial states and the evolution of universes from high-potential regions. This method increases the probability of long-lasting inflation, offering a potential pathway to reconciling the no-boundary proposal with astronomical observations. |
| title | Wormhole Solutions and Pre-inflationary Epoch in $F(R, T)$ Gravity with Axion Fields |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2506.09310 |