Cutoff effects in twisted mass lattice QCD

M. Della Morte, R. Frezzotti, J. Heitger, S. Sint

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

We present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approximation precise results are then obtained with a moderate computational effort, allowing for a detailed study of the continuum approach. The latter is discussed in terms of observables which converge to meson masses and decay constants in the limit of large space-time volume. In the O(a) improved theory we find residual cutoff effects to be at the level of a few percent for lattice spacings of about 0.1 fm.
OriginalsprogUdefineret/Ukendt
TidsskriftJHEP
ISSN1126-6708
StatusUdgivet - 15. aug. 2001

Bibliografisk note

20 pages, 5 figures. Comments about the uncertainties on improvement coefficients added

Emneord

  • hep-lat

Citer dette

Morte, M. D., Frezzotti, R., Heitger, J., & Sint, S. (2001). Cutoff effects in twisted mass lattice QCD. JHEP.
Morte, M. Della ; Frezzotti, R. ; Heitger, J. ; Sint, S. / Cutoff effects in twisted mass lattice QCD. I: JHEP. 2001.
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Morte, MD, Frezzotti, R, Heitger, J & Sint, S 2001, 'Cutoff effects in twisted mass lattice QCD', JHEP.

Cutoff effects in twisted mass lattice QCD. / Morte, M. Della; Frezzotti, R.; Heitger, J.; Sint, S.

I: JHEP, 15.08.2001.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Cutoff effects in twisted mass lattice QCD

AU - Morte, M. Della

AU - Frezzotti, R.

AU - Heitger, J.

AU - Sint, S.

N1 - 20 pages, 5 figures. Comments about the uncertainties on improvement coefficients added

PY - 2001/8/15

Y1 - 2001/8/15

N2 - We present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approximation precise results are then obtained with a moderate computational effort, allowing for a detailed study of the continuum approach. The latter is discussed in terms of observables which converge to meson masses and decay constants in the limit of large space-time volume. In the O(a) improved theory we find residual cutoff effects to be at the level of a few percent for lattice spacings of about 0.1 fm.

AB - We present a first numerical study of lattice QCD with O(a) improved Wilson quarks and a chirally twisted mass term. Renormalized correlation functions are derived from the Schroedinger functional and evaluated in an intermediate space-time volume of size 0.75^3 x 1.5 fm^4. In the quenched approximation precise results are then obtained with a moderate computational effort, allowing for a detailed study of the continuum approach. The latter is discussed in terms of observables which converge to meson masses and decay constants in the limit of large space-time volume. In the O(a) improved theory we find residual cutoff effects to be at the level of a few percent for lattice spacings of about 0.1 fm.

KW - hep-lat

M3 - Tidsskriftartikel

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

SN - 1126-6708

ER -

Morte MD, Frezzotti R, Heitger J, Sint S. Cutoff effects in twisted mass lattice QCD. JHEP. 2001 aug 15.