In this short note, we show that the issue of dynamical vacuum energy can be consistently addressed within a framework based on Dynamics on an Expanding Hypersphere, as an alternative geometrical description to the standard FLRW approach. In a finite S³ geometry, the renormalized electromagnetic vacuum energy depends only on geometric variations and results in a subdominant correction to the cosmological dynamics.
", "publication_date": "2026-05-14", "publisher": "Zenodo", "resource_type": { "id": "publication", "title": { "de": "Publikation", "en": "Publication" } }, "rights": [ { "description": { "en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited." }, "icon": "cc-by-icon", "id": "cc-by-4.0", "props": { "scheme": "spdx", "url": "https://creativecommons.org/licenses/by/4.0/legalcode" }, "title": { "en": "Creative Commons Attribution 4.0 International" } } ], "subjects": [ { "subject": "Vacuum catastrophe" }, { "subject": "Quantum vacuum energy" }, { "subject": "Cosmological constant problem" }, { "subject": "Finite universe cosmology" }, { "subject": "Cosmological equilibrium" }, { "subject": "Closed spatial geometry" } ], "title": "The Vacuum Catastrophe revisited: when the quantum vacuum does not contribute to cosmological equilibrium", "version": "v1" }, "parent": { "access": { "owned_by": { "user": "1273049" }, "settings": { "accept_conditions_text": null, "allow_guest_requests": false, "allow_user_requests": false, "secret_link_expiration": 0 } }, "communities": { "default": "2b459711-1ebf-47bb-b632-42f5c615f9a4", "entries": [ { "access": { "member_policy": "open", "members_visibility": "public", "record_submission_policy": "open", "review_policy": "open", "visibility": "public" }, "children": { "allow": false }, "created": "2019-11-13T20:47:56.447622+00:00", "custom_fields": {}, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "2b459711-1ebf-47bb-b632-42f5c615f9a4", "links": {}, "metadata": { "curation_policy": "Research papers are accepted from all former and current members of the group, but also research papers from external researchers including independent researchers are welcome.
", "description": "This community focus on the significant findings in theoretical physics by thinking outside the box, including new physics theories, questions to special and general relativity.\n\nNote: www.true-physics.com is under construction", "title": "Fundamental Physics Seminar" }, "revision_id": 2, "slug": "relativity", "updated": "2026-04-21T02:13:37.817669+00:00" }, { "access": { "member_policy": "open", "members_visibility": "public", "record_submission_policy": "open", "review_policy": "members", "visibility": "public" }, "children": { "allow": false }, "created": "2025-07-21T19:01:47.662570+00:00", "custom_fields": { "subjects": [ { "id": "euroscivoc:257" }, { "id": "euroscivoc:769" }, { "id": "euroscivoc:1499" }, { "id": "euroscivoc:1495" }, { "id": "euroscivoc:775" }, { "id": "euroscivoc:745" }, { "id": "euroscivoc:791" }, { "id": "euroscivoc:253" }, { "id": "euroscivoc:267" }, { "id": "euroscivoc:793" }, { "id": "euroscivoc:271" }, { "id": "euroscivoc:30054" }, { "id": "euroscivoc:261" }, { "id": "mesh:D012586Q000266" }, { "id": "euroscivoc:609" } ] }, "deletion_status": { "is_deleted": false, "status": "P" }, "id": "3e71bdd5-b747-445c-bcef-82d4d608d428", "links": {}, "metadata": { "curation_policy": "What can be submitted?
All types of scholarly material are welcome: preprints, papers, presentations, data, simulations, commentaries, reviews, videos, or conference proceedings, as long as they relate to the core theme of non-standard cosmology and astrophysics.
Who can contribute?
This community is open to independent researchers, interdisciplinary thinkers, and academic scientists alike. We value intellectual curiosity, open inquiry, and respectful dialogue across backgrounds and disciplines.
Open Science, Open Review
In the spirit of open science, no moderation or gatekeeping is applied to submissions, unless if they seem to fall outside the scope of this community. For all submissions, community commenting, open peer review, and critical discussion are encouraged to promote transparency, collaboration, and constructive engagement.
This community brings together research that explores and challenges the assumptions, theories, and interpretations of standard cosmology and astrophysics.
\nWe welcome all contributions that lie outside or question the mainstream paradigms, including alternative cosmological models, alternative solar models, reinterpretations of astrophysical data, and critical examinations of foundational concepts such as the cosmic microwave background, redshift, galactic rotation curves, general relativity, and more. If your work addresses what doesn’t quite “fit” in the standard models, whether theoretically, observationally, or methodologically, it belongs here.
\nOrigin
This community was initiated following DemystiCon 2025: Beyond the Big Bang, a conference on non-standard cosmology and astrophysics organized by DemystifySci and held in June 2025 in Sesimbra, Portugal. The first contribution is the Book of Abstracts from this event, and we warmly invite others working in related areas to share their research here.
Let this be a space for bold ideas, careful questioning, and fresh perspectives on the cosmos.
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