The resulting emergent gravity plus renormalized QFT setup has the potential to reveal itself in various astrophysical, cosmological and collider phenomena. Further on, we apply our general formalism to the Robertson-Walker spatially flat model of an expanding Universe. This is carried out by using the general theory of Greens functions. It can be used to explain how the large-scale structure of the universe and the anisotropies of the cosmic. In this paper we present a quantum field formulation for massive and massless vector fields in curved space-time. We also find that gravity emerges at the extremum if the QFT under concern consists of new particles beyond the known ones. Quantum field theory curved spacetime quantized fields and gravity Theoretical physics and mathematical physics Cambridge University Press Skip to content To register on our site and for the best user experience, please enable Javascript in your browser using these instructions. Quantum field theory in curved spacetime has been remarkably fruitful. In the case of Poincare-breaking UV cutoff, however, we find that the flat spacetime affine curvature takes the place of the Higgs field and, when taken to curved spacetime, gauge symmetry gets restored at the extremum of the metric-affine action. In the case of Poincare-conserving UV cutoff, we find that the gauge symmetry gets restored via the Higgs mechanism. In the present work, we perform a systematic study of the UV cutoff in regard to its gauge and Poincare properties, and construct UV completions restoring the broken gauge symmetry. And the very same cutoff can explicitly break or conserve the gauge symmetry. (eds) Differential Geometrical Methods in Theoretical Physics. D, 13, 198 (1976).The ultraviolet (UV) cutoff on a quantum field theory (QFT) can explicitly break or conserve the Poincare (translation) symmetry. Quantum Field Theory in Curved Spacetime. S., and DeWitt, C.), (Gordon and Breach, 1973).ĭavies, P. Study of quantum phenomena where gravitation plays a fundamental role, such as in the vicinity of black holes or the. Quantum Fields in Curved Space Search within full text Get access Cited by 3917 N. We review the mathematically rigorous formulation of the quantum theory of a linear field propagating in a globally hyperbolic spacetime. 43, 199 (1975).Ĭarter, B., in Black Holes (edit. Quantum Field Theory in Curved Spacetime. W., Cosmological Event Horizons, Thermo-dynamics and Particle Creation, Univ. Since, in a static space-time, there already exists, a satisfactory quantum field theory, in this case one already knows what the correct complex structure. W.), (Oxford University Press, Oxford, 1975).Īshtekar, A., and Magnon, A., Proc. In this work, as a first attempt to demonstrate the utility of accelerated fields, we present an alternative way to derive Unruh effect. Quantum Gravity-An Oxford Symposium (edit. Unruh effect has been studied in connection with quantum field theory in curved spacetime and it is described by recruiting a uniformly accelerated observer.
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