Browsing by Author "SINT, STEFAN"
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The chirally rotated Schrodinger functional with Wilson fermions and automatic O(a) improvement
SINT, STEFAN (2011)A modified formulation of the Schrodinger functional (SF) is proposed. In the continuum it is related to the standard SF by a non-singlet chiral field rotation and therefore referred to as the chirally rotated SF (?SF). ... -
The chirally rotated Schrödinger functional: theoretical expectations and perturbative tests
SINT, STEFAN (2016)The chirally rotated Schrödinger functional (χSF) with massless Wilson-type fermions provides an alternative lattice regularization of the Schrödinger functional (SF), with different lattice symmetries and a common continuum ... -
Flavour symmetry restoration and kaon weak matrix elements in quenched twisted mass QCD
SINT, STEFAN (2007)We simulate two variants of quenched twisted mass QCD (tmQCD), with degenerate Wilson quarks of masses equal to or heavier than half the strange quark mass. We use Ward identities in order to measure the twist angles of ... -
Non-perturbative running of the coupling from four flavour lattice QCD with staggered quarks
SINT, STEFAN (2010)Using the Schrodinger functional (SF) with a single staggered fermion field we calculate the SF coupling in four-flavour QCD for a wide range of energies and lattice sizes up to L/a = 16. Preliminary results for the ... -
An O(a) modified lattice set-up of the Schrödinger functional in SU(3) gauge theory
SINT, STEFAN (2011)The set-up of the QCD Schrödinger functional (SF) on the lattice with staggered quarks requires an even number of points L/a in the spatial directions, while the Euclidean time extent of the lattice, T/a, must be odd. ... -
A precise determination of B_K in quenched QCD
SINT, STEFAN (2006)The B K parameter is computed in quenched lattice QCD with Wilson twisted mass fermions. Two variants of tmQCD are used; in both of them the relevant S = 2 four-fermion operator is renormalised multi ... -
Testing universality and automatic O(a) improvement in massless lattice QCD with Wilson quarks
SINT, STEFAN (Proceedings of Science, 2010)The chirally rotated Schrodinger functional provides a test bed for universality and automatic O(a) improvement. We here report on extensive quenched simulations of lattice QCD with Wilson quarks in the massless limit. ...