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Event 

Title:
homas Prellberg (Queen Mary U., London): Winding angle distributions of interacting polymers
When:
07.08.2017 16.00 h
Where:
Auditório 201 - Niterói
Category:
Seminários

Description

Seminário de Mecânica Estatística

 

seminário de Mecânica Estatística será apresentado HOJE, 07/08/2017, às 16:00h, na sala 201 do Instituto de Física. 

Título: Winding angle distributions of interacting polymers

Apresentador: Thomas Prellberg, School of Mathematical Sciences, Queen Mary University of London

We review the theory and present results of simulations of winding angle distributions for lattice models of collapsing polymers.

Simulations of interacting self-avoiding walks provide strong numerical evidence for a long-standing prediction of universal scaling of winding angle distributions: the winding angle distribution for N-step walks is compatible with the theoretical prediction of a Gaussian with a variance growing asymptotically as C log N, with C assuming distinct universal values above, at, and below the collapse transition.

In contrast, simulations of interacting self-avoiding trails, which allow crossings, provide strong evidence that while the high temperature swollen state of this model has a winding angle distribution that is also Gaussian, this breaks down at the polymer collapse point and at low temperatures. We provide some evidence that the distributions at the collapse point are well modelled by stretched exponentials.

Venue

Map
Group:
Auditório 201
Street:
Av. Litorânea
ZIP:
24210-346
City:
Niterói
State:
RJ
Country:
Country: br

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