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Instantons from over - improved cooling

Margarita Garcia Perez
(
- Leiden U.
)
,
Antonio Gonzalez-Arroyo
(
- Madrid, Autonoma U.
)
,
Jeroen R. Snippe
(
- Leiden U.
)
,
Pierre van Baal
(
- Leiden U.
)

Sep 22, 1993

17 pages

Published in:

Nucl.Phys.B 413 (1994) 535-552

e-Print:

hep-lat/9309009 [hep-lat]

DOI:

10.1016/0550-3213(94)90631-9

Report number:

INLO-PUB-11-93,
FTUAM-93-31

View in:

ADS Abstract Service

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Abstract: (Desy)

Lattice artefacts are used, through modified lattice actions, as a tool to find the largest instantons in a toroidal geometry [0,L]~3X[0,T] for T to infinity. It is conjectured that the largest instanton is associated with tunnelling through a sphaleron. Existence of instantons with at least 8 parameters can be proven with the help of twisted boundary conditions in the time direction. Numerical results for SU(2) gauge theory obtained by cooling are presented to demonstrate the viability of the method.

gauge field theory: SU(2)
lattice field theory: action
field equations: instanton
field equations: sphaleron
tunneling
boundary condition
numerical calculations: Monte Carlo

References(44)

Figures(0)

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