TL;DR
This paper offers a new interpretation of the Unruh effect using worldline path integrals, suggesting the radiation includes real particles and antiparticles, which could impact experimental detection.
Contribution
It introduces a novel perspective on the Unruh effect through worldline path integrals and highlights the presence of antiparticles in the radiation.
Findings
Unruh radiation includes real particles and antiparticles
Worldline path integrals provide a new interpretative framework
Potential for experimental detection of antiparticles in Unruh radiation
Abstract
In this work, based on the worldline path integral representation of the vacuum energy in spacetime with a Lorentzian metric, we provide a new but complementary interpretation of the Unruh effect. We perform the quantization of the massless free scalar field in Rindler space specifying initial and final conditions. After quantization, the final outcome for the vacuum energy is interpreted as world line path integrals. In this picture we find that the Unruh radiation is made of real particles as well as real antiparticles. The prediction regarding the presence of antiparticles in the radiation might open new lines for experimental detection of the effect. We present a thought experiment which offers a clear picture and supports the new interpretation.
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