# Quenched twisted mass QCD at small quark masses and in large volume

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

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

### Resumé

As a test of quenched lattice twisted mass QCD, we compute the non-perturbatively O($a$) improved pseudoscalar and vector meson masses and the pseudoscalar decay constant down to $M_{\rm PS}/M_{\rm V} = 0.467(13)$ at $\beta=6$ in large volume. We check the absence of exceptional configurations and -- by further data at $\beta=6.2$ -- the size of scaling violations. The CPU time cost for reaching a given accuracy is close to that with ordinary Wilson quarks at $M_{\rm PS}/M_{\rm V} \simeq 0.6$ and grows smoothly as $M_{\rm PS}/M_{\rm V}$ decreases.
Originalsprog Udefineret/Ukendt Nucl.Phys.Proc.Suppl. https://doi.org/10.1016/S0920-5632(01)01682-6 Udgivet - 19. okt. 2001

### Bibliografisk note

4 pages, 3 figures, to appear in Nucl. Phys. B (Proc. Suppl.)

• hep-lat

### Citer dette

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title = "Quenched twisted mass QCD at small quark masses and in large volume",
abstract = "As a test of quenched lattice twisted mass QCD, we compute the non-perturbatively O($a$) improved pseudoscalar and vector meson masses and the pseudoscalar decay constant down to $M_{\rm PS}/M_{\rm V} = 0.467(13)$ at $\beta=6$ in large volume. We check the absence of exceptional configurations and -- by further data at $\beta=6.2$ -- the size of scaling violations. The CPU time cost for reaching a given accuracy is close to that with ordinary Wilson quarks at $M_{\rm PS}/M_{\rm V} \simeq 0.6$ and grows smoothly as $M_{\rm PS}/M_{\rm V}$ decreases.",
keywords = "hep-lat",
author = "Morte, {M. Della} and R. Frezzotti and J. Heitger",
note = "4 pages, 3 figures, to appear in Nucl. Phys. B (Proc. Suppl.)",
year = "2001",
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Quenched twisted mass QCD at small quark masses and in large volume. / Morte, M. Della; Frezzotti, R.; Heitger, J.

I: Nucl.Phys.Proc.Suppl., 19.10.2001.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Quenched twisted mass QCD at small quark masses and in large volume

AU - Morte, M. Della

AU - Frezzotti, R.

AU - Heitger, J.

N1 - 4 pages, 3 figures, to appear in Nucl. Phys. B (Proc. Suppl.)

PY - 2001/10/19

Y1 - 2001/10/19

N2 - As a test of quenched lattice twisted mass QCD, we compute the non-perturbatively O($a$) improved pseudoscalar and vector meson masses and the pseudoscalar decay constant down to $M_{\rm PS}/M_{\rm V} = 0.467(13)$ at $\beta=6$ in large volume. We check the absence of exceptional configurations and -- by further data at $\beta=6.2$ -- the size of scaling violations. The CPU time cost for reaching a given accuracy is close to that with ordinary Wilson quarks at $M_{\rm PS}/M_{\rm V} \simeq 0.6$ and grows smoothly as $M_{\rm PS}/M_{\rm V}$ decreases.

AB - As a test of quenched lattice twisted mass QCD, we compute the non-perturbatively O($a$) improved pseudoscalar and vector meson masses and the pseudoscalar decay constant down to $M_{\rm PS}/M_{\rm V} = 0.467(13)$ at $\beta=6$ in large volume. We check the absence of exceptional configurations and -- by further data at $\beta=6.2$ -- the size of scaling violations. The CPU time cost for reaching a given accuracy is close to that with ordinary Wilson quarks at $M_{\rm PS}/M_{\rm V} \simeq 0.6$ and grows smoothly as $M_{\rm PS}/M_{\rm V}$ decreases.

KW - hep-lat

U2 - 10.1016/S0920-5632(01)01682-6

DO - 10.1016/S0920-5632(01)01682-6

M3 - Tidsskriftartikel

JO - Nucl.Phys.Proc.Suppl.

JF - Nucl.Phys.Proc.Suppl.

ER -