Cosmological Rotation of Quantum-Mechanical Origin and Anisotropy of the Microwave Background

Details Cosmological Rotation of Quantum-Mechanical Origin and Anisotropy of the Microwave Background Cosmological Rotation of Quantum-Mechanical Origin and Anisotropy of the Microwave Background

1993-10-06

arxiv.org/abs/gr-qc/9310011v1

Phys.Rev.D48:5581-5593,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

WUGRAV 93-6, Phys. Rev. D (in press), 33 pages

Scientific paper

10.1103/PhysRevD.48.5581

It is shown that rotational cosmological perturbations can be generated in the early Universe, similarly to gravitational waves. The generating mechanism is quantum-mechanical in its nature, and the created perturbations should now be placed in squeezed vacuum quantum states. The physical conditions under which the phenomenon can occur are formulated. The generated perturbations can contribute to the large-angular-scale anisotropy of the cosmic microwave background radiation. An exact formula is derived for the angular correlation function of the temperature variations caused by the quantum-mechanically generated rotational perturbations. The multipole expansion begins from the dipole component. The comparison with the case of gravitational waves is made.

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