Christian Kellermann

For over thirty years bound states of gluons are an outstanding problem of both theoretical and experimental physics. Being predicted by Quantum-Chromodynamics their experimental confirmation is one of the foremost goals of large experimental facilities currently under construction like FAIR in Darmstadt. This thesis presents a novel approach to the theoretical determination of physical properties of bound states of two gluons, called glueballs. It uses the consistent combination of Schwinger-Dyson equations for gluons and ghosts and appropriate Bethe-Salpeter equations describing their corresponding bound-states. A rigorous derivation of both sets of equations, starting from an 2PI effective action is given as well as a general determination of appropriate decompositions of Bethe-Salpeter amplitudes to a given set of quantum numbers of a glueball. As an application example bound state masses of glueballs in a simple truncation scheme are calculated.

The recent crisis, created by finance capitalism, has brought us to the economic abyss. The excessive freedom of international markets has rapidly transformed into international panic, with states struggling to rescue and bail out a globalised financial sector. Reform is promised by our leaders, but in governments dominated by financial interests there is little hope of meaningful change. Decent Capitalism argues for a response that addresses capitalism’s systemic tendency towards crisis, a tendency which is completely absent from the mainstream debate. The authors develop a concept of a moderated capitalism that keeps its core strengths intact while reducing its inherent destructive political force in our societies. This book argues that reforming the capitalist system will have to be far more radical than the current political discourse suggests. Decent Capitalism is a concept and a slogan that will inspire political activists, trade unionists and policy makers to get behind a package of reforms that finally allows the majority to master capitalism.

The recent crisis, created by finance capitalism, has brought us to the economic abyss. The excessive freedom of international markets has rapidly transformed into international panic, with states struggling to rescue and bail out a globalised financial sector. Reform is promised by our leaders, but in governments dominated by financial interests there is little hope of meaningful change. Decent Capitalism argues for a response that addresses capitalism’s systemic tendency towards crisis, a tendency which is completely absent from the mainstream debate. The authors develop a concept of a moderated capitalism that keeps its core strengths intact while reducing its inherent destructive political force in our societies. This book argues that reforming the capitalist system will have to be far more radical than the current political discourse suggests. Decent Capitalism is a concept and a slogan that will inspire political activists, trade unionists and policy makers to get behind a package of reforms that finally allows the majority to master capitalism.