Rossi, Paolo and Vicari, Ettore (1996) Classical improvement of lattice actions and quantum effects: a unified view. Physics letters. B , B389 . p. 571. ISSN 1873-2445
Full text not available from this repository.Abstract
The possibility of removing the one-loop perturbative effects of lattice artifacts by a proper choice of the lattice action is explored, and found to depend crucially on the properties of the physical quantity considered. In this respect the finite-space-volume mass gap m(L) is an improved observable. We find an explicit momentum space representation of the one-loop contribution to m(L) for arbitrary lattice actions in the case of two-dimensional O(N) sigma models. We define a ``tree perfect'' Symanzik action and find that it formally removes all one-loop lattice artifacts in m(L). On-shell improved actions do not share this property.
Item Type: | Article |
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Additional Information: | Imported from arXiv |
Subjects: | Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici |
Divisions: | Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI" |
Depositing User: | dott.ssa Sandra Faita |
Date Deposited: | 09 Apr 2015 15:47 |
Last Modified: | 09 Apr 2015 15:47 |
URI: | http://eprints.adm.unipi.it/id/eprint/1824 |
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