Dressed Dirac propagator from a locally supersymmetric <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mi mathvariant="script">N</mml:mi><mml:mo linebreak="goodbreak" linebreakstyle="after">=</mml:mo><mml:mn>1</mml:mn></mml:math> spinning particle

Dressed Polyakov loops and center symmetry from Dirac spectra

We construct a novel observable for finite temperature QCD that relates confinement and chi-ral symmetry. It uses phases as boundary conditions for the fermions. We discuss numerical and analytical aspects of this observable, like its spectral behavior below and above the critical temperature, as well as the connection to chiral condensate and center symmetry.

Supersymmetric Particle Physics from Intersecting D-Branes

We review recent progress that has been made in the study of particle physics implications from Type II string with intersecting D-branes. While in the past the focus was on deriving particle physics of four-dimensional N=1 supersymmetric solutions of perturbative heterotic string, recent progress has focused on Type II string theory orientifold compactifications with D-branes. We describe exam...

A Covariant Formulation of Classical Spinning Particle

Covariantly we reformulate the description of a spinning particle in terms of the Poincaré group. We also construct a Lagrangian which entails all possible constraints explicitly; all constraints can be obtained just from the Lagrangian. Furthermore, in this covariant reformulation, the Lorentz element is to be considered to evolve the momentum or spin component from an arbitrary fixed frame an...

The massive spinning particle revisited

All-order renormalization of propagator matrix for unstable Dirac fermions

We consider a system of unstable Dirac fermions in a general parity-nonconserving theory with intergeneration mixing and explain how to renormalize its propagator matrix to all orders in perturbation theory. Wework in the pole scheme, in which the squares of the renormalized masses are identified with the complex pole positions and the wave-function renormalization (WFR) matrices are adjusted a...