Aug 8 – 13, 2022
Hörsaalzentrum Poppelsdorf
Europe/Berlin timezone

An update on QCD+QED simulations with C$^\star$ boundary conditions

Aug 12, 2022, 4:40 PM
CP1-HSZ/1.004 (CP1-HSZ) - HS7 (CP1-HSZ)

CP1-HSZ/1.004 (CP1-HSZ) - HS7


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Oral Presentation Hadron Spectroscopy and Interactions Hadron Spectroscopy and Interactions


Jens Lücke (Humboldt University Berlin)


We give an update on the ongoing effort of the RC$^\star$ collaboration to generate fully dynamical QCD+QED configurations with C$^\star$ boundary conditions using the openQ$^\star$D code. The simulations are tuned to the U-symmetric point ($m_d=m_s$) with pions at $m_{\pi^{\pm}} \approx 400$ MeV. The splitting of the light mesons is used as one of three tuning observables and fixed to $m_{K^0}-m_{K^{\pm}} \approx 5$ MeV and $m_{K^0}-m_{K^{\pm}} \approx 25$ MeV on ensembles with renormalized electromagnetic coupling $\alpha_R \approx \alpha_{\text{phys.}}$ and $\alpha_R \approx 5.5 \alpha_{\text{phys.}}$ respectively. In this talk we will discuss some details concerning our tuning strategy, we will present our calculation of the meson and baryon masses, and we will comment on finite-volume effects comparing meson masses on two different volumes with $m_{\pi^\pm}L \approx 3.2$ and $m_{\pi^\pm}L \approx 5.1$. Finally, we will also present a cost analysis for our simulations. More technical details will be discussed in the companion poster presented by A. Cotellucci.

Primary author

Jens Lücke (Humboldt University Berlin)


Agostino Patella (Humboldt University Berlin) Anian Altherr (ETH Zürich) Lucius Bushnaq Isabel Campos Plasencia (Consejo Superior de Investigaciones Cientificas (CSIC) (ES)) Marco Catillo Alessandro Cotellucci (Humboldt University Berlin) Madeleine Dale Patrick Fritzsch (Trinity College Dublin) Roman Gruber (ETH Zürich) Javad Komijani (ETH Zurich) Marina Krstic Marinkovic (ETH Zurich) Joao C. Pinto Barros (ETH Zürich) Nazario Tantalo (University and INFN of Rome Tor Vergata) Paola Tavella (ETH)

Presentation materials