Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Mawhinney, Robert D."'
Autor:
Abbott, Ryan, Blum, Thomas, Boyle, Peter A., Bruno, Mattia, Christ, Norman H., Hoying, Daniel, Jung, Chulwoo, Kelly, Christopher, Lehner, Christoph, Mawhinney, Robert D., Murphy, David J., Sachrajda, Christopher T., Soni, Amarjit, Tomii, Masaaki, Wang, Tianle
Publikováno v:
Phys. Rev. D 102, 054509 (2020)
We present a lattice QCD calculation of the $\Delta I=1/2$, $K\to\pi\pi$ decay amplitude $A_0$ and $\varepsilon'$, the measure of direct CP-violation in $K\to\pi\pi$ decay, improving our 2015 calculation of these quantities. Both calculations were pe
Externí odkaz:
http://arxiv.org/abs/2004.09440
Autor:
Mawhinney, Robert D.
The RBC and UKQCD Collaborations continue to produce 2+1 flavor domain wall fermion ensembles, currently focusing on an ensemble with a $96^3 \times 192$ volume on SUMMIT at ORNL with $1/a \approx 2.8$ GeV, and smaller ensembles at stronger couplings
Externí odkaz:
http://arxiv.org/abs/1912.13150
The kaon semileptonic form factor in Nf=2+1 domain wall lattice QCD with physical light quark masses
Autor:
Boyle, Peter A., Christ, Norman H., Flynn, Jonathan M., Garron, Nicolas, Jung, Chulwoo, Juttner, Andreas, Mawhinney, Robert D., Murphy, David, Sachrajda, Christopher T., Sanfilippo, Francesco, Yin, Hantao
We present the first calculation of the kaon semileptonic form factor with sea and valence quark masses tuned to their physical values in the continuum limit of 2+1 flavour domain wall lattice QCD. We analyse a comprehensive set of simulations at the
Externí odkaz:
http://arxiv.org/abs/1504.01692
Autor:
McGlynn, Greg, Mawhinney, Robert D.
Publikováno v:
Phys. Rev. D 90, 074502 (2014)
We study the autocorrelations of observables constructed from the topological charge density, such as the topological charge on a time slice or in a subvolume, using a series of hybrid Monte Carlo simulations of pure SU(3) gauge theory with both peri
Externí odkaz:
http://arxiv.org/abs/1406.4551
Autor:
McGlynn, Greg, Mawhinney, Robert D.
We present results from a 2+1 flavor DWF calculation at 1/a = 3 GeV and discuss strategies for similar calculations at finer lattice spacings which will target charm physics. At weak coupling the autocorrelation time of the global topological charge
Externí odkaz:
http://arxiv.org/abs/1311.3695
Autor:
Jin, Xiao-Yong, Mawhinney, Robert D.
With a substantial amount of simulations, we have explored the system across a wide range of lattice scales. We have located a lattice artifact, first order bulk transition, have studied its properties, and found that the flavor-singlet scalar meson
Externí odkaz:
http://arxiv.org/abs/1304.0312
Autor:
Jin, Xiao-Yong, Mawhinney, Robert D.
Publikováno v:
PoS(Lattice 2011)066
We report on new data from additional zero temperature simulations of QCD with 12 flavors. This is a continuation of previous studies using the DBW2 gauge action and naive staggered fermions. With the use of the force gradient integrator and a multip
Externí odkaz:
http://arxiv.org/abs/1203.5855
Autor:
Yin, Hantao, Mawhinney, Robert D.
Publikováno v:
PoS (Lattice 2011) 051
We have implemented a variant of the force gradient integrator proposed by Kennedy et.al. and are using it in our production 2+1 flavor DWF simulations with pion masses of 180 MeV in (4.5fm)3 volumes. We find modest speed-ups (\sim 20%) from using th
Externí odkaz:
http://arxiv.org/abs/1111.5059
Autor:
Jin, Xiao-Yong, Mawhinney, Robert D.
Publikováno v:
PoS Lattice2010:055,2010
As part of our ongoing investigations of QCD with many flavors of quarks, here we report on studies of the finite temperature phase transition for eight-flavor QCD with the DBW2 gauge action and na\"ive staggered fermions. We find a clear first order
Externí odkaz:
http://arxiv.org/abs/1011.1511
Autor:
Jin, Xiao-Yong, Mawhinney, Robert D.
Publikováno v:
PoS LAT2009:049,2009
We compare extensive simulations of QCD with 8 and 12 flavors of degenerate quarks, using the DBW2 gauge action, naive staggered fermions, and the rational hybrid Monte Carlo algorithm. A variety of values of the coupling constant, quark mass, and la
Externí odkaz:
http://arxiv.org/abs/0910.3216