Resonant Photon-Graviton Conversion and Cosmic Microwave Background Fluctuations

Journal Article · Mon Jan 30 00:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.634· OSTI ID:6565143

Chen, P ^[1]

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1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)

We point out that the coupling between the cosmic microwave background radiation (CMBR) and the primordial magnetic field can resonantly convert the photons into gravitons, which induces a frequency-independent fluctuation in the photon flux. Using the observed CMBR fluctuation, we derive a bound on the primordial field strength. The effect can also convert the relic gravitons into photons. For the non-string-based inflation theories it provides a direct test via measurement of long-wavelength electromagnetic waves. For the string cosmology it gives a new bound on the Hubble parameter at the big bang.

• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6565143
• Journal Information: Physical Review Letters; (United States), Vol. 74:5; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
FLUCTUATIONS
GRAVITONS
CONVERSION
MICROWAVE RADIATION
PHOTONS
COSMOLOGY
COUPLING
INFLATION
MAGNETIC FIELDS
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GRAVITATIONAL RADIATION
MASSLESS PARTICLES
POSTULATED PARTICLES
RADIATIONS
VARIATIONS
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