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The QCD vacuum probed by overlap fermions

Volker Weinberg
(
- NIC, Zeuthen and
- Freie U., Berlin
)
,
Ernst-Michael Ilgenfritz
(
- Humboldt U., Berlin
)
,
Karl Koller
(
- Munich U.
)
,
Yoshiaki Koma
(
- DESY
)
,
Gerrit Schierholz
(
- DESY and
- NIC, Zeuthen
)

Oct, 2006

7 pages

Part of Proceedings, 24th International Symposium on Lattice Field Theory (Lattice 2006) : Tucson, USA, July 23-28, 2006

Published in:

PoS LAT2006 (2006) 078

Contribution to:

- Lattice 2006

e-Print:

hep-lat/0610087 [hep-lat]

DOI:

10.22323/1.032.0078

Report number:

DESY-06-177,
HU-EP-06-33,
LMU-ASC-65-06

View in:

ADS Abstract Service

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Abstract:

We summarize different uses of the eigenmodes of the Neuberger overlap operator for the analysis of the QCD vacuum, here applied to quenched configurations simulated by means of the Luescher-Weisz action. We describe the localization and chiral properties of the lowest modes. The overlap-based topological charge density (with and without UV-filtering) is compared with the results of UV-filtering for the field strength tensor. The latter allows to identify domains of good (anti-)selfduality. All these techniques together lead to a dual picture of the vacuum, unifying the infrared instanton picture with the presence of singular defects co-existent at different scales.

References(14)

Figures(0)

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E.-M. Ilgenfritz
(
- Humboldt U., Berlin
)
,
K. Koller
(
- Munich U.
)
,
Y. Koma
(
- DESY
)
,
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(
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)
,
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,
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,
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)
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)
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(
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)
,
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(
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)
,
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(
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)
,
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)
,
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•
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