69 citations · 199 across the 9 of their papers we have counts for
9 papers
Charmless chiral perturbation theory for N_f=2+1+1 twisted mass lattice QCD
Oliver Baer, Ben Horz
The chiral Lagrangian describing the low-energy behavior of N_f=2+1+1 twisted mass lattice QCD is constructed through O(a^2). In contrast to existing results the effects of a heavy…
Chiral perturbation theory for gradient flow observables
Oliver Bar, Maarten Golterman
We construct the next-to-leading order chiral lagrangian for scalar and pseudo-scalar densities defined using the gradient flow. We calculate the chiral condensate and the pion dec…
Excited-state contribution to the axial-vector and pseudo-scalar correlators with two extra pions
Oliver Bar, Maarten Golterman
We study multi-particle state contributions to the QCD two-point functions of the axial-vector and pseudo-scalar quark bilinears in a finite spatial volume. For sufficiently small…
Flavor symmetry breaking in mixed-action QCD
Oliver Baer, Maarten Golterman, Yigal Shamir
We study the phase structure of mixed-action QCD with two Wilson sea quarks and two chiral valence quarks, starting from the chiral lagrangian. A priori, the effective theory allow…
The epsilon regime with twisted mass Wilson fermions
O. Bar, S. Necco, A. Shindler
We investigate the leading lattice spacing effects in mesonic two-point correlators computed with twisted mass Wilson fermions in the epsilon-regime. By generalizing the procedure…
On Witten's global anomaly for higher SU(2) representations
O. Baer
The spectral flow of the overlap operator is computed numerically along a particular path in gauge field space. The path connects two gauge equivalent configurations which differ b…