Quenched scaling of Wilson twisted mass fermions

We investigate the scaling behaviour of quenched Wilson twisted mass fermions at maximal twist applying two definitions of the critical mass. The first definition uses the vanishing of the pseudoscalar meson mass m_PS while the second employs the vanishing of the PCAC quark mass m_PCAC. We confirm in both cases the expected O(a) improvement. In addition, we show that the PCAC quark mass definition leads to substantially reduced O(a^2) cut-off effects even when the pseudoscalar meson mass m_PS is as small as 270 MeV. At a fixed value of m_PS we perform continuum limits for the vector meson mass m_V and for the pseudoscalar decay constant f_PS and discuss the renormalisation constant Z_V of the vector current.

fermion: lattice field theory
gauge field theory: SU(3)
mass: twist
scaling
quark: mass
PCAC model
pseudoscalar meson: mass
vector meson: mass
numerical calculations: Monte Carlo

References(30)

Figures(0)

Lattice QCD with a chirally twisted mass term

Alpha

Collaboration

•

Roberto Frezzotti
(
- Milan Bicocca U.
)

et al.

- JHEP 08 (2001) 058
•
e-Print:
- hep-lat/0101001
•
DOI:
- 10.1088/1126-6708/2001/08/058

Chirally improving Wilson fermions. 1. O(a) improvement

R. Frezzotti
(
- INFN, Milan and
- Milan Bicocca U.
)
,
G.C. Rossi
(
- Rome U., Tor Vergata and
- INFN, Rome2
)

- JHEP 08 (2004) 007
•
e-Print:
- hep-lat/0306014
•
DOI:
- 10.1088/1126-6708/2004/08/007

Scaling test for Wilson twisted mass QCD

XLF

Collaboration

•

Karl Jansen
(
- NIC, Zeuthen and
- DESY, Zeuthen
)

et al.

- Phys.Lett.B 586 (2004) 432-438
•
e-Print:
- hep-lat/0312013
•
DOI:
- 10.1016/j.physletb.2004.01.030

Going chiral: Overlap versus twisted mass fermions

XLF

Collaboration

•

Wolfgang Bietenholz
(
- Humboldt U., Berlin
)

et al.

- JHEP 12 (2004) 044
•
e-Print:
- hep-lat/0411001
•
DOI:
- 10.1088/1126-6708/2004/12/044

Light quarks with twisted mass fermions

XLF

Collaboration

•

K. Jansen
(
- NIC, Zeuthen
)

et al.

- Phys.Lett.B 619 (2005) 184-191
•
e-Print:
- hep-lat/0503031
•
DOI:
- 10.1016/j.physletb.2005.05.051

Twisted mass QCD for the pion electromagnetic form-factor

Abdou M. Abdel-Rehim
(
- Regina U.
)
,
Randy Lewis
(
- Regina U.
)

- Phys.Rev.D 71 (2005) 014503
•
e-Print:
- hep-lat/0410047
•
DOI:
- 10.1103/PhysRevD.71.014503

Spectrum of quenched twisted mass lattice QCD at maximal twist

- Phys.Rev.D 71 (2005) 094505
•
e-Print:
- hep-lat/0503007
•
DOI:
- 10.1103/PhysRevD.71.094505

Twisted mass quarks and the phase structure of lattice QCD

F. Farchioni
(
- Munster U.
)
,
R. Frezzotti
(
- Milan Bicocca U.
)
,
K. Jansen
(
- NIC, Zeuthen
)
,
I. Montvay
(
- Hasylab, DESY
)
,
G.C. Rossi
(
- NIC, Zeuthen and
- INFN, Rome2 and
- Rome U., Tor Vergata
)

et al.

- Eur.Phys.J.C 39 (2005) 421-433
•
e-Print:
- hep-lat/0406039
•
DOI:
- 10.1140/epjc/s2004-02078-9

Exploring the phase structure of lattice QCD with twisted mass quarks

F. Farchioni
(
- Munster U., ITP
)
,
C. Urbach
(
- NIC, Zeuthen and
- DESY, Zeuthen
)
,
R. Frezzotti
(
- NIC, Zeuthen and
- DESY, Zeuthen and
- Freie U., Berlin and
- INFN, Milan and
- Milan Bicocca U. and
- DESY and
- Rome U., Tor Vergata and
- INFN, Rome2
)
,
K. Jansen
(
- NIC, Zeuthen and
- DESY, Zeuthen and
- Freie U., Berlin and
- INFN, Milan and
- Milan Bicocca U. and
- DESY and
- Rome U., Tor Vergata and
- INFN, Rome2
)
,
I. Montvay
(
- NIC, Zeuthen and
- DESY, Zeuthen and
- Freie U., Berlin and
- INFN, Milan and
- Milan Bicocca U. and
- DESY and
- Rome U., Tor Vergata and
- INFN, Rome2
)

et al.

- Nucl.Phys.B Proc.Suppl. 140 (2005) 240-245,
•
e-Print:
- hep-lat/0409098
•
DOI:
- 10.1016/j.nuclphysbps.2004.11.132

The Phase structure of lattice QCD with Wilson quarks and renormalization group improved gluons

F. Farchioni
(
- Munster U.
)
,
K. Jansen
(
- NIC, Zeuthen
)
,
I. Montvay
(
- Hasylab, DESY
)
,
E. Scholz
(
- Hasylab, DESY
)
,
L. Scorzato
(
- Humboldt U., Berlin (main)
)

et al.

- Eur.Phys.J.C 42 (2005) 73-87
•
e-Print:
- hep-lat/0410031
•
DOI:
- 10.1140/epjc/s2005-02262-5

A Numerical reinvestigation of the Aoki phase with N(f) = 2 Wilson fermions at zero temperature

- Phys.Rev.D 69 (2004) 074511
•
e-Print:
- hep-lat/0309057
•
DOI:
- 10.1103/PhysRevD.69.074511

The Aoki phase for N(f) = 2 Wilson fermions revisited

- Nucl.Phys.B Proc.Suppl. 129 (2004) 898-900,
•
e-Print:
- hep-lat/0309059
•
DOI:
- 10.1016/S0920-5632(03)02747-6

Comparison between overlap and twisted mass fermions towards the chiral limit

XLF

Collaboration

•

Wolfgang Bietenholz

et al.

- Nucl.Phys.B Proc.Suppl. 140 (2005) 683-685,
•
e-Print:
- hep-lat/0409109
•
DOI:
- 10.1016/j.nuclphysbps.2004.11.370

Twisted-mass QCD, O(a) improvement and Wilson chiral perturbation theory

Sinya Aoki
(
- Tsukuba U. and
- RIKEN BNL
)
,
Oliver Bar
(
- Tsukuba U.
)

- Phys.Rev.D 70 (2004) 116011
•
e-Print:
- hep-lat/0409006
•
DOI:
- 10.1103/PhysRevD.70.116011

Twisted mass chiral perturbation theory at next-to-leading order

- Phys.Rev.D 71 (2005) 074501
•
e-Print:
- hep-lat/0411021
•
DOI:
- 10.1103/PhysRevD.71.074501

Reducing cutoff effects in maximally twisted lattice QCD close to the chiral limit

R. Frezzotti
(
- INFN, Milan and
- Milan Bicocca U.
)
,
G. Martinelli
(
- Rome U. and
- INFN, Rome
)
,
M. Papinutto
(
- NIC, Zeuthen
)
,
G.C. Rossi
(
- Rome U., Tor Vergata and
- INFN, Rome2 and
- NIC, Zeuthen
)

- JHEP 04 (2006) 038
•
e-Print:
- hep-lat/0503034
•
DOI:
- 10.1088/1126-6708/2006/04/038

Some remarks on O(a) improved twisted mass QCD

Roberto Frezzotti
(
- Milan Bicocca U.
)
,
Stefan Sint
(
- CERN
)

- Nucl.Phys.B Proc.Suppl. 106 (2002) 814-816
•
e-Print:
- hep-lat/0110140
•
DOI:
- 10.1016/S0920-5632(01)01852-7

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

- Nucl.Phys.B Proc.Suppl. 106 (2002) 260-262
•
e-Print:
- hep-lat/0110166
•
DOI:
- 10.1016/S0920-5632(01)01682-6

Precision computation of the strange quark's mass in quenched QCD

ALPHA and
UKQCD

Collaborations

•

Joyce Garden
(
- Edinburgh U.
)

et al.

- Nucl.Phys.B 571 (2000) 237-256
•
e-Print:
- hep-lat/9906013
•
DOI:
- 10.1016/S0550-3213(99)00714-2

Effective chiral Lagrangians and lattice QCD

ALPHA

Collaboration

•

Jochen Heitger
(
- DESY
)

et al.

- Nucl.Phys.B 588 (2000) 377-399
•
e-Print:
- hep-lat/0006026
•
DOI:
- 10.1016/S0550-3213(00)00490-9

Gauge invariant smearing and matrix correlators using Wilson fermions at Beta = 6.2

UKQCD

Collaboration

•

C.R. Allton
(
- Southampton U.
)

et al.

- Phys.Rev.D 47 (1993) 5128-5137
•
e-Print:
- hep-lat/9303009
•
DOI:
- 10.1103/PhysRevD.47.5128

The Connection Between Local Operators on the Lattice and in the Continuum and Its Relation to Meson Decay Constants

G. Martinelli
(
- Frascati
)
,
Yi-Cheng Zhang
(
- SISSA, Trieste and
- Rome U.
)

- Phys.Lett.B 123 (1983) 433,
- Phys. Lett. B123 (1983) 433-436 and Frascati Infn - LNF-82-69(P) (82,REC.MAR.83) 6p
•
DOI:
- 10.1016/0370-2693(83)90987-5

On the viability of lattice perturbation theory

G.Peter Lepage
(
- Cornell U., LNS
)
,
Paul B. Mackenzie
(
- Fermilab
)

- Phys.Rev.D 48 (1993) 2250-2264
•
e-Print:
- hep-lat/9209022
•
DOI:
- 10.1103/PhysRevD.48.2250

HMC algorithm with multiple time scale integration and mass preconditioning

C. Urbach
(
- Freie U., Berlin and
- NIC, Zeuthen
)
,
K. Jansen
(
- NIC, Zeuthen
)
,
A. Shindler
(
- NIC, Zeuthen
)
,
U. Wenger
(
- NIC, Zeuthen
)

- Comput.Phys.Commun. 174 (2006) 87-98
•
e-Print:
- hep-lat/0506011
•
DOI:
- 10.1016/j.cpc.2005.08.006

Schwarz-preconditioned HMC algorithm for two-flavour lattice QCD

Martin Luscher
(
- CERN
)

- Comput.Phys.Commun. 165 (2005) 199-220
•
e-Print:
- hep-lat/0409106
•
DOI:
- 10.1016/j.cpc.2004.10.004

1-25 of 30
1
2
25 / page