Unruh phenomena and thermalization for qudit detectors
- URL: http://arxiv.org/abs/2309.04598v2
- Date: Mon, 12 Feb 2024 20:45:22 GMT
- Title: Unruh phenomena and thermalization for qudit detectors
- Authors: Caroline Lima, Everett Patterson, Erickson Tjoa, Robert B. Mann
- Abstract summary: We study Unruh phenomena for a qudit detector coupled to a quantized scalar field.
We show that there are limitations to the utility of the detailed balance condition as an indicator for Unruh thermality of higher-dimensional qudit detector models.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study Unruh phenomena for a qudit detector coupled to a quantized scalar
field, comparing its response to that of a standard qubit-based Unruh-DeWitt
detector. We show that there are limitations to the utility of the detailed
balance condition as an indicator for Unruh thermality of higher-dimensional
qudit detector models. This can be traced to the fact that a qudit has multiple
possible transition channels between its energy levels, in contrast to the
2-level qubit model. We illustrate these limitations using two types of qutrit
detector models based on the spin-1 representations of $SU(2)$ and the
non-Hermitian generalization of the Pauli observables (the Heisenberg-Weyl
operators).
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