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Quantum dissipative effects for a real scalar field coupled to a dynamical Neumann surface in d+1 dimensions

C. D. Fosco and B. C. Guntsche

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Phys. Rev. D 112, 105017 – Published 24 November, 2025

DOI: https://doi.org/10.1103/z8mr-63kx

Abstract

We study dissipative effects for a system consisting of a massless real scalar field satisfying Neumann boundary conditions on a space and time-dependent surface, in d+1 dimensions. We focus on the comparison of the results for this system with the ones corresponding to Dirichlet conditions, and the same surface spacetime geometry. We show that, in d=1, the effects are equal up to second order for rather arbitrary surfaces, and up to fourth order for wavelike surfaces. For d>1, we find general expressions for their difference.

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Quantum dissipative effects for a real scalar field coupled to a time-dependent Dirichlet surface in d+1 dimensions

C. D. Fosco and B. C. Guntsche
Phys. Rev. D 110, 105021 (2024)

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Phys. Rev. D 112, 105017– Published 24 November, 2025
  • Received 3 October 2025
  • Accepted 9 November 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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