منابع مشابه
String Theory in Curved Space-time
Intrinsic and extrinsic geometric properties of string world sheets in curved space-time background are explored. In our formulation, the only dynamical degrees of freedom of the string are its immersion coordinates. Classical equation of motion and the space-time energy-momentum tensor of the string are obtained. The equations of motion for the extrinsic curvature action are second order for t...
متن کاملUltraviolet and Infrared Finiteness in Two Dimensional Curved Space–Time
Different models of field theories in two dimensions can be described by the action Tr ∫ φF . In the presence of a curved background, we construct a local supersymmetry–like transformations under which the action is invariant. Furthermore, by analysing the cohomology of the theory we show the absence of anomalies. Also the ultraviolet as well as the infrared finiteness of the theory are proven ...
متن کاملClassical gluodynamics in curved space–time and the soft Pomeron
QCD at the classical level possesses scale invariance which is broken by quantum effects. This “dimensional transmutation” phenomenon can be mathematically described by formulating classical gluodynamics in a curved, conformally flat, space–time with non–vanishing cosmological constant. We study QCD high–energy scattering in this theory. We find that the properties of the scattering amplitude a...
متن کاملThermodynamics in Curved Space-Time and Its Application to Holography
The thermodynamic behaviors of a system living in a curved space-time are different from those of a system in a flat space-time. We have investigated the thermodynamics for a system consisting of relativistic massless bosons. We show that a strongly curved metric will produce a large enhancement of the degrees of freedom in the formulae of energy and entropy of the system, as a comparison to th...
متن کاملCoarse-grained entropy and stimulated emission in curved space-time.
We study the entropy generation and particle production in scalar quantum field theory in expanding spacetimes with many-particle mixed initial states. The recently proposed coarse-grained entropy approach by Brandenberger et al. is applied to systems which may have a non-zero initial entropy. We find that although the particle production is amplified as a result of boson statistics, the (coars...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1926
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.12.4.244