Wave correlations and quantum noise in cosmology

Abstract

Wave noise is correlated. While it may look random in space, correlations appear in space-time, because the noise is carried by wave propagation. These correlations of wave noise give rise to fluctuation forces such as the Casimir force, they are responsible for the particle creation in the dynamical Casimir effect and in the expanding universe. This paper considers the noise correlations for light waves in non-exponentially expanding flat space. The paper determines the high-frequency asymptotics of the correlation spectrum in the conformal vacuum. These noise correlations give rise to a nontrivial vacuum energy that may appear as the cosmological constant.

References in corpus (6)

• Fiber-optical analogue of the event horizon
• General Relativity in Electrical Engineering
• Hawking radiation from ultrashort laser pulse filaments
• Current status of the Dynamical Casimir Effect
• A combined analysis of the $H_0$ late time direct measurements and the impact on the Dark Energy sector
• Lifshitz theory of the cosmological constant

Cited by in corpus (1)

• Quantum noise in time-dependent media and cosmic expansion