Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Naples Federico IIIT4k papers
- Centre National de la Recherche ScientifiqueFR3.7k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT3.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.3k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT3.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT3k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.9k papers
- Rutherford Appleton LaboratoryGB2.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.8k papers
- Sapienza University of RomeIT2.7k papers
- The Ohio State UniversityUS2.7k papers
17 papers · 2 filters
Three Dimensional Gross-Neveu Model on Curved Spaces
Gennaro Miele, Patrizia Vitale
The large N limit of the 3-d Gross-Neveu model is here studied on manifolds with positive and negative constant curvature. Using the -function regularization we analyze the crit…
Heat-kernel Coefficients and Spectra of the Vector Laplacians on Spherical Domains with Conical Singularities
Lara De Nardo, Dmitri V. Fursaev, Gennaro Miele
The spherical domains with conical singularities are a convenient arena for studying the properties of tensor Laplacians on arbitrary manifolds with such a kind of singular…
Axial Gauge in Euclidean Quantum Gravity
Ivan G. Avramidi, Giampiero Esposito, Alexander Yu. Kamenshchik
The axial gauge is applied to the analysis of Euclidean quantum gravity on manifolds with boundary. A set of boundary conditions which are completely invariant under infinitesimal…
Fermion Hilbert Space and Fermion Doubling in the Noncommutative Geometry Approach to Gauge Theories
F. Lizzi, G. Mangano, G. Miele +1
In this paper we study the structure of the Hilbert space for the recent noncommutative geometry models of gauge theories. We point out the presence of unphysical degrees of freedo…
Quantized Maxwell Theory in a Conformally Invariant Gauge
Giampiero Esposito
Maxwell theory can be studied in a gauge which is invariant under conformal rescalings of the metric, and first proposed by Eastwood and Singer. This paper studies the correspondin…
Unified Gauge Models and One-Loop Quantum Cosmology
Giampiero Esposito, Alexander Yu. Kamenshchik, Gennaro Miele
This paper studies the normalizability criterion for the one-loop wave function of the universe in a de Sitter background, when various unified gauge models are considered. It turn…
Local Boundary Conditions in Quantum Supergravity
Giampiero Esposito
When quantum supergravity is studied on manifolds with boundary, one may consider local boundary conditions which fix on the initial surface the whole primed part of tangential com…
Non-Local Boundary Conditions for Massless Spin-1/2 Fields
Giampiero Esposito
This paper studies the 1-loop approximation for a massless spin-1/2 field on a flat four-dimensional Euclidean background bounded by two concentric 3-spheres, when non-local bounda…
One-Loop Effective Action for Euclidean Maxwell Theory on Manifolds with Boundary
Giampiero Esposito, Alexander Yu. Kamenshchik, Klaus Kirsten
This paper studies the one-loop effective action for Euclidean Maxwell theory about flat four-space bounded by one three-sphere, or two concentric three-spheres. The analysis relie…
Symplectic Structures and Quantum Mechanics
G. Marmo, G. Vilasi
Canonical coordinates for the Schrödinger equation are introduced, making more transparent its Hamiltonian structure. It is shown that the Schrödinger equation, considered as a cla…
Cones, Spins and Heat Kernels
Dmitri V. Fursaev, Gennaro Miele
The heat kernels of Laplacians for spin 1/2, 1, 3/2 and 2 fields, and the asymptotic expansion of their traces are studied on manifolds with conical singularities. The exact mode-b…
From Vertex Operators to Calogero-Sutherland Models
Vincenzo Marotta, Antonino Sciarrino
The correlation function of the product of N generalized vertex operators satisfies an infinite set of Ward identities, related to a W_{\infty} algebra, whose extention out of the…
One-Loop Divergences in Simple Supergravity: Boundary Effects
Giampiero Esposito, Alexander Yu. Kamenshchik
This paper studies the semiclassical approximation of simple supergravity in Riemannian four-manifolds with boundary, within the framework of -function regularization. The massl…
Constraints on Unified Gauge Theories from Noncommutative Geometry
F. Lizzi, G. Mangano, G. Miele +1
The Connes and Lott reformulation of the strong and electroweak model represents a promising application of noncommutative geometry. In this scheme the Higgs field naturally appear…
Boundary Operators in Euclidean Quantum Gravity
Ivan G. Avramidi, Giampiero Esposito, Alexander Yu. Kamenshchik
Gauge-invariant boundary conditions in Euclidean quantum gravity can be obtained by setting to zero at the boundary the spatial components of metric perturbations, and a suitable c…
String techniques for the calculation of renormalization constants in field theory
P. Di Vecchia, A. Lerda, L. Magnea +2
We describe a set of methods to calculate gauge theory renormalization constants from string theory, all based on a consistent prescription to continue off shell open bosonic strin…
One-Loop Effective Action on the Four-Ball
Giampiero Esposito, Alexander Yu. Kamenshchik, Giuseppe Pollifrone
This paper applies -function regularization to evaluate the 1-loop effective action for scalar field theories and Euclidean Maxwell theory in the presence of boundaries. After a…