Journal Article

FZJ-2016-00885

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nucleon electric dipole moment with the gradient flow: The θ -term contribution

Shindler, A. (Corresponding author)FZJ* ; Luu, T.FZJ* ; de Vries, J.FZJ*

2015
Soc. [S.l.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/11118  doi:10.1103/PhysRevD.92.094518

Abstract: We propose a new method to calculate electric dipole moments induced by the strong QCD θ term. The method is based on the gradient flow for gauge fields and is free from renormalization ambiguities. We test our method by computing the nucleon electric dipole moments in pure Yang-Mills theory at several lattice spacings, enabling a first-of-its-kind continuum extrapolation. The method is rather general and can be applied for any quantity computed in a θ vacuum. This first application of the gradient flow has been successful and demonstrates proof-of-principle, thereby providing a novel method to obtain precise results for nucleon and light nuclear electric dipole moments.

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Contributing Institute(s):

1. Theorie der starken Wechselwirkung (IKP-3)
2. Theorie der Starken Wechselwirkung (IAS-4)
3. JARA - HPC (JARA-HPC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)
3. Beyond the Standard Model Matrix Elements from lattice QCD (jias40_20140501) (jias40_20140501)

Appears in the scientific report 2015

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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