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PreprintCC BY 4.0arXiv

Dissipative Multi-Field Dynamics from Non-Hermitian Inflationary Potentials

  • S. D. Campos
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Abstract

In this work, we develop a perturbative framework for inflation driven by a complex inflaton with non-minimal gravitational coupling and a non-Hermitian potential. During the observable cosmic microwave background radiation era, the dynamics reduce to an effectively conservative two-field model, preserving the predictions of the α-attractor class and satisfying Planck 2018 and BICEP/Keck constraints on ns, r, and fNL. Near the end of inflation, trajectory bending activates the non-Hermitian sector, triggering geometric reheating. The resulting non-unitary evolution modifies the curvature spectrum and stochastic gravitational-wave background through a calculable damping factor determined by the complex mass eigenvalues. While cosmic microwave background-scale observables remain essentially unchanged, a distinctive suppression emerges in the high-frequency gravitational-wave spectrum (f > 102 Hz), potentially testable by future detectors such as the Einstein Telescope and the Big Bang Observer.

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Cite

BibTeXRIS
BibTeX
@misc{campos2026dissipative,
  title = {{Dissipative Multi-Field Dynamics from Non-Hermitian Inflationary Potentials}},
  author = {S. D. Campos},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.00992},
  eprint = {2609.00992},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.00992},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Dissipative Multi-Field Dynamics from Non-Hermitian Inflationary Potentials
AU  - S. D. Campos
PY  - 2026
DA  - 2026/09/01
PB  - arXiv
DO  - 10.48550/arxiv.2609.00992
UR  - https://arxiv.org/abs/2609.00992
AB  - In this work, we develop a perturbative framework for inflation driven by a complex inflaton with non-minimal gravitational coupling and a non-Hermitian potential. During the observable cosmic microwave background radiation era, the dynamics reduce to an effectively conservative two-field model, preserving the predictions of the α-attractor class and satisfying Planck 2018 and BICEP/Keck constraints on n_s, r, and f_NL. Near the end of inflation, trajectory bending activates the non-Hermitian sector, triggering geometric reheating. The resulting non-unitary evolution modifies the curvature spectrum and stochastic gravitational-wave background through a calculable damping factor determined by the complex mass eigenvalues. While cosmic microwave background-scale observables remain essentially unchanged, a distinctive suppression emerges in the high-frequency gravitational-wave spectrum (f > 10^2 Hz), potentially testable by future detectors such as the Einstein Telescope and the Big Bang Observer.
ER  -