|Author||Birrell, N. D. ♦ Davies, P. C. W.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ COSMOLOGICAL MODELS ♦ PARTICLE PRODUCTION ♦ -FIELD THEORY ♦ SYMMETRY BREAKING ♦ CONFORMAL GROUPS ♦ LAGRANGIAN FUNCTION ♦ MASSLESS PARTICLES ♦ MATTER ♦ METRICS ♦ RENORMALIZATION ♦ SPACE-TIME ♦ UNIVERSE ♦ ELEMENTARY PARTICLES ♦ FIELD THEORIES ♦ FUNCTIONS ♦ LIE GROUPS ♦ MATHEMATICAL MODELS ♦ QUANTUM FIELD THEORY ♦ SYMMETRY GROUPS ♦ High Energy Physics- Field Theory ♦ Astrophysics & Cosmology- Cosmology|
|Abstract||We show that creation of field quanta can occur even in conformally trivial situations, contrary to popular belief. This conformal-symmetry breaking owes its existence to the so-called conformal anomaly in the field stress tensor which, in the case of interacting fields in curved space-time, contains state-dependent, nongeometrical, and other terms which are associated with particle generation. The effect is explicitly demonstrated for massless lambdaphi/sup 4/ theory in a Robertson-Walker space-time.|
|Learning Resource Type||Article|
|Publisher Department||Department of Mathematics, King's College, Strand, London WC2R 2LS, United Kingdom|
|Publisher Place||United States|
|Journal||Phys. Rev., D|
|Organization||Department of Mathematics, King's College, Strand, London WC2R 2LS, United Kingdom|
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