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Journal articles
Coherent States Formulation of Polymer Field Theory
Abstract : We introduce a stable and efficient complex Langevin (CL) scheme to enable the first 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 non-linear, non-local functional of the auxiliary fields, and the action of the field theory has a fully explicit, finite-order and semi-local polynomial character. In the context of a polymer solution model, we demonstrate that the new CS-CL dynamical scheme for sampling fluctuations in the space of coherent states yields results in good agreement with now-standard AF simulations. The formalism is potentially applicable to a broad range of polymer architectures and may facilitate systematic generation of trial actions for use in coarse-graining and numerical renormalization-group studies.
https://hal-cea.archives-ouvertes.fr/cea-01054230
Contributor : Emmanuelle de Laborderie Connect in order to contact the contributor
Submitted on : Tuesday, August 5, 2014 - 3:09:26 PM
Last modification on : Tuesday, May 18, 2021 - 11:06:05 AM
Contributor : Emmanuelle de Laborderie Connect in order to contact the contributor
Submitted on : Tuesday, August 5, 2014 - 3:09:26 PM
Last modification on : Tuesday, May 18, 2021 - 11:06:05 AM
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