SCALING IN MANY-BODY SYSTEMS AND PROTON STRUCTURE FUNCTION

Scaling in Many-body Systems and Proton Structure Function

The observation of scaling in processes in which a weakly interacting probe delivers large momentum q to a many-body system simply reflects the dominance of incoherent scattering off target constituents. While a suitably defined scaling function may provide rich information on the internal dynamics of the target, in general its extraction from the measured cross section requires careful conside...

Scaling in many-body systems and proton response

The observation of scaling in processes in which a weakly interacting probe delivers large momentum q to a many-body system reflects the dominance of incoherent scattering off target constituents. While a suitably defined scaling function can provide rich information on the internal dynamics of the target, in general its extraction from the measured cross section requires careful consideration ...

Entanglement in Many-Body Systems

The recent interest in aspects common to quantum information and condensed matter has prompted a flory of activity at the border of these disciplines that were far distant untill few years ago. Numerous interesting questions have been addressed so far. Here we review an important part of this field, the properties of the entanglement in many-body systems. We discuss the zero and finite temperat...

The many-body Green function of degenerate systems

Scaling Limit and Renormalisation Group in the Critical Point Analysis of General (Quantum) Many Body Systems

We employ the machinery of smooth scaling and coarse-graining of observables, developed recently by us in the context of so-called fluctuation operators (inspired by prior work of Verbeure et al) to make a rigorous renormalisation group analysis of the critical regime. The approach appears to be quite general, encompassing classical, quantum, discrete and continuous systems. One of our central ...