Euclidean Quantum Gravity on Manifolds with Boundary - Esposito, Giampiero;Kamenshchik, A.Yu.;Pollifrone, G.
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This book reflects our own struggle to understand the semiclassical behaviour of quantized fields in the presence of boundaries. Along many years, motivated by the problems of quantum cosmology and quantum field theory, we have studied in detail the one-loop properties of massless spin-l/2 fields, Euclidean Maxwell the ory, gravitino potentials and Euclidean quantum gravity. Hence our book begins with a review of the physical and mathematical motivations for studying physical theories in the presence of boundaries, with emphasis on electrostatics, vacuum v Maxwell theory and quantum cosmology.…mehr

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Produktbeschreibung
This book reflects our own struggle to understand the semiclassical behaviour of quantized fields in the presence of boundaries. Along many years, motivated by the problems of quantum cosmology and quantum field theory, we have studied in detail the one-loop properties of massless spin-l/2 fields, Euclidean Maxwell the ory, gravitino potentials and Euclidean quantum gravity. Hence our book begins with a review of the physical and mathematical motivations for studying physical theories in the presence of boundaries, with emphasis on electrostatics, vacuum v Maxwell theory and quantum cosmology. We then study the Feynman propagator in Minkowski space-time and in curved space-time. In the latter case, the corre sponding Schwinger-DeWitt asymptotic expansion is given. The following chapters are devoted to the standard theory of the effective action and the geometric im provement due to Vilkovisky, the manifestly covariant quantization of gauge fields, zeta-function regularization in mathematics and in quantum field theory, and the problem of boundary conditions in one-loop quantum theory. For this purpose, we study in detail Dirichlet, Neumann and Robin boundary conditions for scalar fields, local and non-local boundary conditions for massless spin-l/2 fields, mixed boundary conditions for gauge fields and gravitation. This is the content of Part I. Part II presents our investigations of Euclidean Maxwell theory, simple super gravity and Euclidean quantum gravity.
Autorenporträt
Prof. Giampiero Esposito (1962) obtained an honours (cum laude) degree in Physics from Naples University in 1986, and was a St. John's Benefactor's Scholar at DAMTP in Cambridge (UK) from 1987 to 1991, where he received the J.T. Knight Prize Essay award in 1989 and obtained his Ph.D. degree. He was elected to INFN and ICTP post-doctoral positions at Naples and Trieste, respectively, and has been an INFN Research Fellow at Naples (position with tenure) since 1993, and INFN Primo Ricercatore since 2007. His original contributions are mainly devoted to quantum gravity and quantum field theory on manifolds with boundary (one-loop conformal anomalies, mixed and diff-invariant boundary conditions for Euclidean quantum gravity, heat-kernel asymptotics, Casimir effect and measurement of variations of zero-point energy), spontaneous symmetry breaking in the early universe, accelerated expansion of the universe, singularity avoidance in quantum cosmology, and scattering fromsingular potentials in quantum mechanics.