Cosmological aspects of the heterotic string above the Hagedorn temperature

Journal Article · Tue Nov 15 04:00:00 EST 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.3087· OSTI ID:6702297

Leblanc, Y

We consider the cosmology of the heterotic string above the grand-unification scale taking into account the thermodynamical phase structure of an ideal gas of heterotic string excitations above the Hagedorn temperature. We find that the Universe expands up to a critical volume a/sub c//sup 9/ above which the massive (Planckian) excitations should decay into massless excitations (nonequilibrium regime). The Universe then goes on expanding in a radiation-dominated phase with a scale factor a(t)approx...beta..(t). Because the heterotic string is self-dual with respect to temperature, it is argued that there is an induced duality relation for the scale factor a(t).

• Research Organization: Center for Theoretical Physics, Laboratory for Nuclear Science dge, Massachusetts 02139
• OSTI ID: 6702297
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:10; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
645400 -- High Energy Physics-- Field Theory
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BLACK HOLES
COMPOSITE MODELS
COSMOLOGY
CRYSTAL MODELS
DUALITY
EXTENDED PARTICLE MODEL
FIELD THEORIES
FUNCTIONS
GRAND UNIFIED THEORY
ISING MODEL
KALUZA-KLEIN THEORY
MATHEMATICAL MODELS
PARTICLE MODELS
PARTITION FUNCTIONS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUARK MODEL
STRING MODELS
THERMODYNAMIC PROPERTIES
TWO-DIMENSIONAL CALCULATIONS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
UNIVERSE