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arXiv · 2512.10710

Macroscopic backreaction of the trace anomaly on classical vacuum backgrounds

Raúl Carballo-Rubio·Francesco Di Filippo·Shinji Mukohyama·Kazumasa Okabayashi
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Abstract

We study the backreaction of quantum fields in the Boulware vacuum state on the Schwarzschild geometry, using the Riegert--Mottola--Vaulin renormalized stress-energy tensor derived from the conformal anomaly. An order-reduction procedure is applied to the first order, paying special attention to the conservation of the resulting stress-energy tensor. The results obtained in these different situations are compared between them, and also to recent works in the literature using other approximations for the renormalized stress-energy tensor.

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Raúl Carballo-Rubio, Francesco Di Filippo, Shinji Mukohyama, Kazumasa Okabayashi. 2025-12-11. Macroscopic backreaction of the trace anomaly on classical vacuum backgrounds. https://doi.org/10.1103/v5d2-k3f4

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