Anti-particle detector models in QFT

Abstract

We analyze families of particle detector models that linearly couple to different kinds of fermionic and bosonic fields. We also study the response of these detectors to particle and anti-particle excitations of the field. We propose a simple linear complex scalar particle detector model that captures the fundamental features of fermionic field detectors similarly to how the Unruh-DeWitt model captures the features of the light matter interaction. We also discuss why we do not need to limit ourselves to quadratic models commonly employed in past literature. Namely, we provide a physically motivated mechanism that restores U(1) symmetry in these linear complex models.

30 pages, 5 Appendices, 3 figures. RevTeX 4.1

References in corpus (11)

• Entangling Power of an Expanding Universe
• Wavepacket detection with the Unruh-DeWitt model
• Then again, how often does the Unruh-DeWitt detector click if we switch it carefully?
• Quantum delocalization, gauge and quantum optics: The light-matter interaction in relativistic quantum information
• Static, stationary and inertial Unruh-DeWitt detectors on the BTZ black hole
• Unruh-DeWitt detector response along static and circular geodesic trajectories for Schwarzschild-AdS black holes
• Relativistic causality in particle detector models: Faster-than-light signalling and "Impossible measurements"
• Neutrino flavor oscillations without flavor states
• What makes a particle detector click
• General features of the thermalization of particle detectors and the Unruh effect
• Fermionic scalar field

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• Causal State Updates in Real Scalar Quantum Field Theory
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• Spacetime curvature from ultra rapid measurements of quantum fields
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• Entanglement harvesting: detector gap and field mass optimization