Symmetry interaction and many-body correlations

Dynamic correlations in Brownian many-body systems.

For classical Brownian systems driven out of equilibrium, we derive inhomogeneous two-time correlation functions from functional differentiation of the one-body density and current with respect to external fields. In order to allow for appropriate freedom upon building the derivatives, we formally supplement the Smoluchowski dynamics by a source term, which vanishes at the physical solution. Th...

Optimal correlations in many-body quantum systems.

Information and correlations in a quantum system are closely related through the process of measurement. We explore such relation in a many-body quantum setting, effectively bridging between quantum metrology and condensed matter physics. To this aim we adopt the information-theory view of correlations and study the amount of correlations after certain classes of positive-operator-valued measur...

Statistical correlations in nuclear many-body states

Statistical correlations of nuclear many-body states are explored in the Odls shell model as a function of the strength of residual interactions. Model independent predictions for correlation functions and distributions, developed from parametric random-matrix theory, are found to describe the observed nuclear behavior for excited states. In particular, we find that correlations generally decre...

SAPT A Program for Many Body Symmetry Adapted Perturbation Theory Calculations of Intermolecular Interaction Energies

Nuclear many-body dynamics constrained by QCD and chiral symmetry

We present a novel description of nuclear many-body systems, both for nuclear matter and finite nuclei, emphasizing the connection with the condensate structure of the QCD ground state and spontaneous chiral symmetry breaking. Lorentz scalar and vector mean-fields are introduced in accordance with QCD sum rules. Nuclear binding arises from pionic fluctuations, using in-medium chiral perturbatio...