Research area:
Statistical Physics and Thermodynamics

Statistical physics covers a host of different things, covering everything that can be formulated in terms of something analogous to a Boltzmann distribution, which includes e.g. the critical phenomena in the thermodynamics of various systems, and the (Euclidean) Path Integral formulation of various Field Theories. Here I have been interested in various subjects, like Lattice Gauge Theory for e.g. Yang Mills fields, Random Surfaces as models for String models, the thermodynamics of various kinds of polymers.

Presently, I am interested in the transformation of the thermodynamics of a set of interacting polymers to a field theory, by rewriting the interactions as quadratic expressions that can be linearized by means of a (functional) Fourier transform. This allows to integrate out the original coordinates in favour of a resulting field theory. One advantage is that the number of identical molecules might be replaced by a tunable parameter. Typically the resulting theory ivolves complex fields, and so has to be simulated by means of Complex Langevin updating.

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