Lattice study of monopoles in the Electroweak theory

B. L.G. Bakker; M. A. Zubkov; A. I. Veselov

Lattice study of monopoles in the Electroweak theory

B. L.G. Bakker, M. A. Zubkov, A. I. Veselov

Research output: Contribution to journal › Conference article › peer-review

Abstract

We investigated numerically properties of Nambu monopoles in lattice Electroweak theory at realistic values of α and θ_W . Our choice of parameters of lattice Lagrangian corresponds to large values of the Higgs boson mass M_H > 2M_W . We find that the density of Nambu monopoles cannot be predicted by the choice of the initial parameters of Electroweak theory and should be considered as the new external parameter of the theory. We also investigate the difference between the versions of Electroweak theory with the gauge groups SU (2) U (1) and SU (2) U (1)/Z₂. We do not detect any difference at α ∼₁₂₈ ¹ . However, such a difference appears in the strong coupling region and is related to the properties of monopoles constructed of the hypercharge field.

Original language	English
Article number	337
Journal	Proceedings of Science
Volume	42
State	Published - 2007
Externally published	Yes
Event	25th International Symposium on Lattice Field Theory, LATTICE 2007 - Regensburg, Germany Duration: 30 Jul 2007 → 4 Aug 2007

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title = "Lattice study of monopoles in the Electroweak theory",

abstract = "We investigated numerically properties of Nambu monopoles in lattice Electroweak theory at realistic values of α and θW . Our choice of parameters of lattice Lagrangian corresponds to large values of the Higgs boson mass MH > 2MW . We find that the density of Nambu monopoles cannot be predicted by the choice of the initial parameters of Electroweak theory and should be considered as the new external parameter of the theory. We also investigate the difference between the versions of Electroweak theory with the gauge groups SU (2) U (1) and SU (2) U (1)/Z2. We do not detect any difference at α ∼128 1 . However, such a difference appears in the strong coupling region and is related to the properties of monopoles constructed of the hypercharge field.",

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T1 - Lattice study of monopoles in the Electroweak theory

AU - Bakker, B. L.G.

AU - Zubkov, M. A.

AU - Veselov, A. I.

N1 - Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

PY - 2007

Y1 - 2007

N2 - We investigated numerically properties of Nambu monopoles in lattice Electroweak theory at realistic values of α and θW . Our choice of parameters of lattice Lagrangian corresponds to large values of the Higgs boson mass MH > 2MW . We find that the density of Nambu monopoles cannot be predicted by the choice of the initial parameters of Electroweak theory and should be considered as the new external parameter of the theory. We also investigate the difference between the versions of Electroweak theory with the gauge groups SU (2) U (1) and SU (2) U (1)/Z2. We do not detect any difference at α ∼128 1 . However, such a difference appears in the strong coupling region and is related to the properties of monopoles constructed of the hypercharge field.

AB - We investigated numerically properties of Nambu monopoles in lattice Electroweak theory at realistic values of α and θW . Our choice of parameters of lattice Lagrangian corresponds to large values of the Higgs boson mass MH > 2MW . We find that the density of Nambu monopoles cannot be predicted by the choice of the initial parameters of Electroweak theory and should be considered as the new external parameter of the theory. We also investigate the difference between the versions of Electroweak theory with the gauge groups SU (2) U (1) and SU (2) U (1)/Z2. We do not detect any difference at α ∼128 1 . However, such a difference appears in the strong coupling region and is related to the properties of monopoles constructed of the hypercharge field.

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SN - 1824-8039

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JF - Proceedings of Science

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T2 - 25th International Symposium on Lattice Field Theory, LATTICE 2007

Y2 - 30 July 2007 through 4 August 2007

ER -

Lattice study of monopoles in the Electroweak theory

Abstract

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