Coherent states formulation of polymer field theory

Coherent states formulation of polymer field theory.

We introduce a stable and efficient complex Langevin (CL) scheme to enable the first direct numerical simulations of the coherent-states (CS) formulation of polymer field theory. In contrast with Edwards' well-known auxiliary-field (AF) framework, the CS formulation does not contain an embedded nonlinear, non-local, implicit functional of the auxiliary fields, and the action of the field theory...

Coherent States in Field Theory

Coherent states have three main properties: coherence, overcompleteness and intrinsic geometrization. These unique properties play fundamental roles in field theory, especially, in the description of classical domains and quantum fluctuations of physical fields, in the calculations of physical processes involving infinite number of virtual particles, in the derivation of functional integrals an...

A field theory formulation of polymer networks

New field theory formulation of localised states in disordered systems

We present a new field theoretic formulation of the quantun mechanics of disordered systems. The problem is converted to an explicit field theory by changing variables in the functional integral over all random potentials to an integral over all possible wavefunctions. Unlike previous formulations this field theory has the novel feature of having the 'right' sign for the coefficient of the 'p" ...

Gauge field theory coherent states (GCS): I. General properties

In this paper we outline a rather general construction of diffeomorphism covariant coherent states for quantum gauge theories. By this we mean states ψ(A,E), labelled by a point (A,E) in the classical phase space, consisting of canonically conjugate pairs of connectionsA and electric fieldsE, respectively, such that: (a) they are eigenstates of a corresponding annihilation operator which is a g...