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Kappa vacua: Infinite number of new vacua in two-dimensional quantum field theory

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arxiv 2212.03781 v2 pith:Y3PWHIXZ submitted 2022-12-07 hep-th quant-ph

classification hep-thquant-ph
keywords kappamodevacuafieldvacuuminfinitenumberquantum
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abstract

We uncover an infinite number of vacua in two-dimensional quantum field theory, the Klein-Gordon field for simplicity, by conceiving a new mode that is classified by a real positive parameter $\kappa$. We show each mode has a distinct vacuum, say $\kappa$-vacuum. This new mode is a generalization of the Unruh-Minkowski mode. Moreover, the Minkowski and Rindler vacua are special cases of the $\kappa$-vacuum for $\kappa = 1$ and $\kappa \rightarrow \infty$, respectively.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Modulated Accelerating Mirrors as a Physical Realization of the Kappa-Gamma Vacuum

    hep-th 2025-09 conditional novelty 6.0 of 10

    A modulated Carlitz-Willey mirror realizes the κγ vacuum on future null infinity: the trajectory sets the temperature, the boundary pump phase sets the squeeze angle.

  2. A Tunable Unruh Effect: Accelerated Detectors in Kappa-Rindler Vacua

    hep-th 2025-06 conditional novelty 4.0 of 10

    An accelerated detector in a kappa-deformed version of the Minkowski vacuum sees a perfect thermal bath at temperature T = κ times the standard Unruh temperature.

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