Cosmic Strings and the String Dilaton

Journal Article · Sat Mar 01 00:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.2288· OSTI ID:535942

Damour, T ^[1]; Vilenkin, A ^[2]

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1. Institut des Hautes Etudes Scientifiques, F-91440 Bures sur Yvette (France)
2. Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts 02155 (United States)

The existence of a dilaton (or moduli) with gravitational-strength coupling to matter imposes stringent constraints on the allowed energy scale of cosmic strings, {eta}. In particular, superheavy gauge strings with {eta}{approximately}10{sup 16}GeV are ruled out unless the dilaton mass m{sub {phi}}{approx_gt}100TeV , while the currently popular value m{sub {phi}}{approximately}1TeV imposes the bound {eta}{approx_lt}3{times}10{sup 11}GeV . Some nonstandard cosmological scenarios which can avoid these constraints are pointed out. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 535942
• Journal Information: Physical Review Letters, Vol. 78, Issue 12; Other Information: PBD: Mar 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COSMOLOGY
STRING MODELS
MATTER
GRAVITATIONAL INTERACTIONS
MASS
COUPLING
SCALAR FIELDS
SUPERSTRING MODELS
FIELD EQUATIONS
ENERGY-MOMENTUM TENSOR
LIMITING VALUES