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19 papers · 2 filters
Boundary dynamics and multiple reflection expansion for Robin boundary conditions
M. Bordag, H. Falomir, E. M. Santangelo +1
In the presence of a boundary interaction, Neumann boundary conditions should be modified to contain a function S of the boundary fields: (\nabla_N +S)ϕ=0. Information on quantum b…
Heat kernel Coefficients and Divergencies of the Casimir Energy for the Dispersive Sphere
M. Bordag, K. Kirsten
The first heat kernel coefficients are calculated for a dispersive ball whose permittivity at high frequency differs from unity by inverse powers of the frequency. The correspondin…
One Loop Renormalization of Spontaneously Broken U(2) Gauge Theory on Noncommutative Spacetime
Yi Liao
We examine the renormalizability problem of spontaneously broken non-Abelian gauge theory on noncommutative spacetime. We show by an explicit analysis of the U(2) case that ultravi…
N_T=4 equivariant extension of the 3D topological model of Blau and Thompson
Bodo Geyer, Dietmar Mülsch
The Blau-Thompson N_T=2, D=3 nonequivariant topological model is extended to a N_T=4, D=3 topological theory. The latter, formally, may be regarded as a topological deformation of…
Functional Closure of Schwinger-Dyson Equations in Quantum Electrodynamics, Part 1: Generation of Connected and One-Particle Irreducible Feynman Diagrams
Axel Pelster, Hagen Kleinert, Michael Bachmann
Using functional derivatives with respect to free propagators and interactions we derive a closed set of Schwinger-Dyson equations in quantum electrodynamics. Its conversion to gra…
Twisted N=8, D=2 super Yang-Mills theory as example of a Hodge-type cohomological theory
B. Geyer, D. M"ulsch
It is shown that the dimensional reduction of the N_T=2, D=3 Blau-Thompson model to D=2, i.e., the novel topological twist of N=8, D=2 super Yang-Mills theory, provides an example…