Topology in 2D CP**(N-1) models on the lattice: a critical comparison of different cooling techniques

Details Topology in 2D CP**(N-1) models on the lattice: a critical comparison of different cooling techniques Topology in 2D CP**(N-1) models on the lattice: a critical comparison of different cooling techniques

2000-01-24

arxiv.org/abs/hep-lat/0001027v1

Phys.Rev.D62:094507,2000

Physics

High Energy Physics

High Energy Physics - Lattice

24 pages, 10 figures (from 16 eps files)

Scientific paper

10.1103/PhysRevD.62.094507

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.

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