Quantum Mode Mixing in the Teo Rotating Wormhole: From Casimir Emission to Superradiance
ORAL
Abstract
We present a quantum field–theoretic analysis of massless scalar fields in the rotating Teo wormhole, a stationary, horizonless spacetime with two asymptotically flat regions. Using Bogoliubov transformations, we construct the in’’ and out’’ mode bases and compute the Bogoliubov coefficients that characterize rotation–induced mixing between positive- and negative-frequency sectors.
Frame dragging generates an asymmetric effective potential that produces nonreciprocal scattering between the two asymptotic regions. This asymmetry allows analytic expressions for reflection/transmission amplitudes, superradiant amplification, particle number, and two-mode entanglement entropy as functions of the rotation parameter. Because the geometry is stationary, particle creation arises purely from geometric asymmetry rather than time-dependent backgrounds or horizons.
The results establish the rotating Teo wormhole as a stationary geometric analog of the Asymmetric Dynamical Casimir Effect, unifying classical superradiance and quantum Bogoliubov amplification in a single horizonless spacetime. This framework provides a new setting for studying quantum processes in rotating geometries and enables future extensions to higher-spin fields and semiclassical backreaction.
Frame dragging generates an asymmetric effective potential that produces nonreciprocal scattering between the two asymptotic regions. This asymmetry allows analytic expressions for reflection/transmission amplitudes, superradiant amplification, particle number, and two-mode entanglement entropy as functions of the rotation parameter. Because the geometry is stationary, particle creation arises purely from geometric asymmetry rather than time-dependent backgrounds or horizons.
The results establish the rotating Teo wormhole as a stationary geometric analog of the Asymmetric Dynamical Casimir Effect, unifying classical superradiance and quantum Bogoliubov amplification in a single horizonless spacetime. This framework provides a new setting for studying quantum processes in rotating geometries and enables future extensions to higher-spin fields and semiclassical backreaction.
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Publication: Radhakrishnan, R. et al., A study of scalar field perturbations and quasi-normal modes in the Teo rotating wormhole background using first and third order WKB approximations, planned for Phys. Rev. D, 2025
Presenters
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Ramesh Radhakrishnan
- Baylor University