Two-dimensional CP(N-1) models are used to compare the behavior of different cooling techniques on the lattice. Cooling is one of the most frequently used tools to study on the lattice the topological properties of the vacuum of a field theory. We show that different cooling methods behave in an equivalent way. To see this we apply the cooling methods on classical instantonic configurations and on configurations of the thermal equilibrium ensemble. We also calculate the topological susceptibility by using the cooling technique and analyze the picture of cooling as a diffusion process.
|Autori:||ALLES B.; COSMAI L.; D'ELIA M; PAPA A.|
|Titolo:||Topology in 2-D CP**(N-1) models on the lattice: A Critical comparison of different cooling techniques|
|Anno del prodotto:||2000|
|Digital Object Identifier (DOI):||10.1103/PhysRevD.62.094507|
|Appare nelle tipologie:||1.1 Articolo in rivista|