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DDalphaAMG for Twisted Mass Fermions · Around

2016

DDalphaAMG for Twisted Mass Fermions

Bacchio, Simone, Alexandrou, Costantia, Finkenrath, Jacob et al.

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We present the Adaptive Aggregation-based Domain Decomposition Multigrid method extended to the twisted mass fermion discretization action.

We show comparisons of results as a function of tuning the parameters that enter the twisted mass version of the DDalphaAMG library (https://github.com/sbacchio/DDalphaAMG).
Moreover, we linked the DDalphaAMG library to the tmLQCD software package and give details on the performance of the multigrid solver during HMC simulations at the physical point.

Built on

Speeding up lattice QCD simulations with clover improved Wilson fermions
M. Hasenbusch and K. Jansen · 2003
Earlier work this paper cites.
Solution of the Dirac equation in lattice QCD using a domain decomposition method
M. Lüscher · 2004
Earlier work this paper cites.
Chirally improving Wilson fermions. 1. O(a) improvement
R. Frezzotti and G. C. Rossi · 2004
Earlier work this paper cites.

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Then

Simulating QCD at the Physical Point with N f = 2 N_{f}=2 Wilson Twisted Mass Fermions at Maximal Twist
A. Abdel-Rehim et al · 2015
Later among the works it cites.
Adaptive Aggregation-based Domain Decomposition Multigrid for Twisted Mass Fermions. 2016. arXiv:1610.02370 [hep-lat]
Original
C. Alexandrou, S. Bacchio, J. Finkenrath, A. Frommer, K. Kahl and M. Rottmann · 2016
Closest in time.
Adaptive Domain Decomposition Multigrid for Lattice QCD
M. Rottmann · 2016
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