The Schwinger Model on the lattice in the Microcanonical Fermionic Average approach

The Microcanonical Fermionic Average method has been used so far in the context of lattice models with phase transitions at finite coupling. To test its applicability to Asymptotically Free theories, we have implemented it in QED\(_2\), \it i.e.\rm the Schwinger Model. We exploit the possibility, in...

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Bibliographic Details
Published in:arXiv.org 1994-01
Main Authors: Azcoiti, V, G Di Carlo, Galante, A, Grillo, A F, Laliena, V
Format: Article
Language:English
Subjects:
Phase transitions
Quantum electrodynamics
Trajectory measurement
Online Access:Get full text
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Summary:The Microcanonical Fermionic Average method has been used so far in the context of lattice models with phase transitions at finite coupling. To test its applicability to Asymptotically Free theories, we have implemented it in QED\(_2\), \it i.e.\rm the Schwinger Model. We exploit the possibility, intrinsic to this method, of studying the whole \(\beta, m\) plane at negligible computer cost, to follow constant physics trajectories and measure the \(m \to 0\) limit of the chiral condensate. We recover the continuum result within 3 decimal places.
ISSN:2331-8422
DOI:10.48550/arxiv.9401032