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Date
2023-04-06Type
- Conference Paper
ETH Bibliography
yes
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Abstract
We outline a strategy to efficiently include the electromagnetic interactions of the sea quarks in QCD+QED.
When computing iso-spin breaking corrections to hadronic quantities at leading order in the electromagnetic coupling, the sea-quark charges result in quark-line disconnected diagrams which are challenging to compute precisely.
An analysis of the variance of stochastic estimators for the relevant traces of quark propagators helps us to improve the situation for certain flavour combinations and space-time decompositions.
We present preliminary numerical results for the variances of the corresponding contributions using an ensemble of Nf=2+1 domain-wall fermions generated by the RBC/UKQCD collaboration. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000595791Publication status
publishedExternal links
Book title
Proceedings of The 39th International Symposium on Lattice Field Theory (LATTICE2022)Journal / series
PoS: Proceedings of ScienceVolume
Pages / Article No.
Publisher
SISSAEvent
Organisational unit
09738 - Krstic Marinkovic, Marina / Krstic Marinkovic, Marina
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ETH Bibliography
yes
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