Semiclassical backreaction from massive quantum fields deforms the local exterior geometry of a global monopole but leaves its asymptotic solid-angle deficit unchanged.
Vacuum polarization of the quantized massive scalar field in Reissner-Nordstr\"om spacetime
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abstract
The approximation of the renormalized stress-energy tensor of the quantized massive scalar field in Reissner-Nordstr\"om spacetime is constructed. It is achieved by functional differentiation of the first two nonvanishing terms of the Schwinger-DeWitt expansion involving the coincidence limit of the Hadamard-Minakshisundaram-DeWitt-Seely coefficients $[a_{3}]$ and $[a_{4}]$ with respect to the metric tensor. It is shown, by comparison with the existing numerical results, that inclusion of the second-order term leads to substantial improvement of the approximation of the exact stress-energy tensor. The approximation to the field fluctuation, $\langle \phi^{2} \rangle,$ is constructed and briefly discussed.
fields
gr-qc 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Semiclassical Backreaction of Massive Quantum Fields in the Spacetime of a Global Monopole
Semiclassical backreaction from massive quantum fields deforms the local exterior geometry of a global monopole but leaves its asymptotic solid-angle deficit unchanged.