Neutron electric dipole moment at fixed topology

K. F. Liu

doi:10.1142/S0217732309031375

Neutron electric dipole moment at fixed topology

K. F. Liu

Producción científica: Article › revisión exhaustiva

3 Citas (Scopus)

Resumen

We describe the finite volume effects of CP-odd quantities, such as the neutron electric dipole moment and the anapole moment in the θ-vacuum, under different topological sectors. We evaluate the three-point Green's functions for the electromagnetic current in a fixed nontrivial topological sector in order to extract these CP-odd observables. We discuss the role of zero modes in the CP-odd Green's function and show that, in the quenched approximation, there is a power divergence in the quark mass for CP-odd quantities at finite volume.

Idioma original	English
Páginas (desde-hasta)	1971-1982
Número de páginas	12
Publicación	Modern Physics Letters A
Volumen	24
N.º	25
DOI	https://doi.org/10.1142/S0217732309031375
Estado	Published - ago 20 2009

Nota bibliográfica

Funding Information:
This work was supported by U.S. DOE grant DE-FG05-84ER40154. The author wishes to thank S. Aoki, S. Brodsky, P. deForcrand, S. Gardner, P. Hasenfratz and M. Lüscher for useful discussions. He also acknowledge the hospitality received while visiting CERN where this work is initiated in October 2006.

Financiación

This work was supported by U.S. DOE grant DE-FG05-84ER40154. The author wishes to thank S. Aoki, S. Brodsky, P. deForcrand, S. Gardner, P. Hasenfratz and M. Lüscher for useful discussions. He also acknowledge the hospitality received while visiting CERN where this work is initiated in October 2006.

Financiadores	Número del financiador
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory	DE-FG05-84ER40154

ASJC Scopus subject areas

Nuclear and High Energy Physics
Astronomy and Astrophysics
General Physics and Astronomy

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10.1142/S0217732309031375

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title = "Neutron electric dipole moment at fixed topology",

abstract = "We describe the finite volume effects of CP-odd quantities, such as the neutron electric dipole moment and the anapole moment in the θ-vacuum, under different topological sectors. We evaluate the three-point Green's functions for the electromagnetic current in a fixed nontrivial topological sector in order to extract these CP-odd observables. We discuss the role of zero modes in the CP-odd Green's function and show that, in the quenched approximation, there is a power divergence in the quark mass for CP-odd quantities at finite volume.",

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author = "Liu, \{K. F.\}",

note = "Funding Information: This work was supported by U.S. DOE grant DE-FG05-84ER40154. The author wishes to thank S. Aoki, S. Brodsky, P. deForcrand, S. Gardner, P. Hasenfratz and M. L{\"u}scher for useful discussions. He also acknowledge the hospitality received while visiting CERN where this work is initiated in October 2006.",

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PY - 2009/8/20

Y1 - 2009/8/20

N2 - We describe the finite volume effects of CP-odd quantities, such as the neutron electric dipole moment and the anapole moment in the θ-vacuum, under different topological sectors. We evaluate the three-point Green's functions for the electromagnetic current in a fixed nontrivial topological sector in order to extract these CP-odd observables. We discuss the role of zero modes in the CP-odd Green's function and show that, in the quenched approximation, there is a power divergence in the quark mass for CP-odd quantities at finite volume.

AB - We describe the finite volume effects of CP-odd quantities, such as the neutron electric dipole moment and the anapole moment in the θ-vacuum, under different topological sectors. We evaluate the three-point Green's functions for the electromagnetic current in a fixed nontrivial topological sector in order to extract these CP-odd observables. We discuss the role of zero modes in the CP-odd Green's function and show that, in the quenched approximation, there is a power divergence in the quark mass for CP-odd quantities at finite volume.

KW - Electric dipole moment

KW - Neutron

KW - Topology

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UR - https://www.scopus.com/pages/publications/70349286763#tab=citedBy

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DO - 10.1142/S0217732309031375

M3 - Article

AN - SCOPUS:70349286763

SN - 0217-7323

VL - 24

SP - 1971

EP - 1982

JO - Modern Physics Letters A

JF - Modern Physics Letters A

IS - 25

ER -

Neutron electric dipole moment at fixed topology

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Nota bibliográfica

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ASJC Scopus subject areas

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