Long Inflation Screens Euclidean-Wormhole Initial States
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866911649946927104 |
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| author | Khan, Imtiaz Pirzada Mustafa, G. Atamurotov, Farruh Yuan, Chengxun |
| author_facet | Khan, Imtiaz Pirzada Mustafa, G. Atamurotov, Farruh Yuan, Chengxun |
| contents | Euclidean wormholes can prepare inflation in non--Bunch--Davies initial states, but long Lorentzian expansion screens this memory from the CMB. We derive a visibility bound for Euclidean-matched Bogoliubov data: the pivot excitation satisfies $|β_*| \lesssim e^{-2N_{\rm pre}}$, and smooth Euclidean filters confine residual signatures to a comoving edge $k_w=a_iM$. Only near-minimal inflation, or an edge inside the observable window, leaves detectable scalar, tensor, and higher-point imprints. For longer inflation, wormhole-prepared perturbations are driven to the Bunch--Davies prediction. Euclidean memory therefore, becomes a quantitative bound on inflationary duration, with direct targets in CMB polarization and large-scale structure: the longer inflation lasts, the less of the wormhole remains on the sky. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_04166 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Long Inflation Screens Euclidean-Wormhole Initial States Khan, Imtiaz Pirzada Mustafa, G. Atamurotov, Farruh Yuan, Chengxun High Energy Physics - Phenomenology Euclidean wormholes can prepare inflation in non--Bunch--Davies initial states, but long Lorentzian expansion screens this memory from the CMB. We derive a visibility bound for Euclidean-matched Bogoliubov data: the pivot excitation satisfies $|β_*| \lesssim e^{-2N_{\rm pre}}$, and smooth Euclidean filters confine residual signatures to a comoving edge $k_w=a_iM$. Only near-minimal inflation, or an edge inside the observable window, leaves detectable scalar, tensor, and higher-point imprints. For longer inflation, wormhole-prepared perturbations are driven to the Bunch--Davies prediction. Euclidean memory therefore, becomes a quantitative bound on inflationary duration, with direct targets in CMB polarization and large-scale structure: the longer inflation lasts, the less of the wormhole remains on the sky. |
| title | Long Inflation Screens Euclidean-Wormhole Initial States |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2605.04166 |