Electric polarizability of hadrons with overlap fermions on multi-GPUs - INSPIRE

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Electric polarizability of hadrons with overlap fermions on multi-GPUs

Michael Lujan
(
- George Washington U.
)
,
Andrei Alexandru
(
- George Washington U.
)
,
Frank Lee
(
- George Washington U.
)

Nov, 2011

8 pages

Part of Proceedings, 29th International Symposium on Lattice field theory (Lattice 2011) : Squaw Valley, Lake Tahoe, USA, July 10-16, 2011

Published in:

PoS LATTICE2011 (2011) 165

Contribution to:

- Lattice 2011

e-Print:

1111.6288 [hep-lat]

DOI:

10.22323/1.139.0165

View in:

ADS Abstract Service

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Abstract: (arXiv)

Electric polarizability is an important parameter for the internal structure of hadrons. Previous studies of polarizabilities have been done at relatively heavy pion masses, leaving the chiral region largely unexplored. In this report, we use overlap fermions which are known to be computationally demanding to properly capture the chiral dynamics. We present an implementation strategy to construct overlap on multi-GPUs. We find that our GPU code has an equivalent of \sim30 CPU cores to 1 GPU. We also present preliminary results for the polarizability of the neutral pion.

Note:

8 pages, 4 figures, presented at The XXIX International Symposium on Lattice Field Theory - Lattice 2011, July 10-16, 2011, Squaw Valley, Lake Tahoe, California

polarizability: electric
fermion: overlap
hadron: polarizability
pi: mass
chiral
lattice field theory
capture
lattice

References(14)

Figures(4)

Nucleon polarizabilities from deuteron Compton scattering within a Green's-function hybrid approach

- Eur.Phys.J.A 46 (2010) 111-137
•
e-Print:
- nucl-th/0512063
•
DOI:
- 10.1140/epja/i2010-11024-y

Neutron electric polarizability

- PoS LAT2009 (2009) 144
•
e-Print:
- 0911.2520
•
DOI:
- 10.22323/1.091.0144

Alternative to domain wall fermions

H. Neuberger
(
- Rutgers U., Piscataway and
- Paris U., VI-VII
)

- Nucl.Phys.B Proc.Suppl. 109 (2002) 63-69,
•
e-Print:
- hep-lat/0111026
•
DOI:
- 10.1016/S0920-5632(02)01392-0

Solving Lattice QCD systems of equations using mixed precision solvers on GPUs

QUDA

Collaboration

•

M.A. Clark
(
- Harvard-Smithsonian Ctr. Astrophys. and
- Harvard U.
)

et al.

- Comput.Phys.Commun. 181 (2010) 1517-1528
•
e-Print:
- 0911.3191
•
DOI:
- 10.1016/j.cpc.2010.05.002

Lattice QCD as a video game

Gyozo I. Egri
(
- Eotvos U.
)
,
Zoltan Fodor
(
- Eotvos U. and
- Wuppertal U. and
- UC, San Diego
)
,
Christian Hoelbling
(
- Wuppertal U.
)
,
Sandor D. Katz
(
- Eotvos U. and
- Wuppertal U.
)
,
Daniel Nogradi
(
- Wuppertal U.
)

et al.

- Comput.Phys.Commun. 177 (2007) 631-639,
- Comput.Phys.Commun. 177 (2007) 631-639
•
e-Print:
- hep-lat/0611022
•
DOI:
- 10.1016/j.cpc.2007.06.005

The Background field method on the lattice

- PoS LATTICE2008 (2008) 145
•
e-Print:
- 0810.2833
•
DOI:
- 10.22323/1.066.0145

Numerical techniques for lattice QCD in the epsilon regime

Leonardo Giusti
(
- CERN and
- Marseille, CPT
)
,
C. Hoelbling
(
- Marseille, CPT
)
,
M. Luscher
(
- CERN
)
,
H. Wittig
(
- DESY
)

- Comput.Phys.Commun. 153 (2003) 31-51
•
e-Print:
- hep-lat/0212012
•
DOI:
- 10.1016/S0010-4655(02)00874-3

A Note on Neuberger's double pass algorithm

- Phys.Rev.E 68 (2003) 066704
•
e-Print:
- hep-lat/0306025
•
DOI:
- 10.1103/PhysRevE.68.066704

Overlap Valence on 2+1 Flavor Domain Wall Fermion Configurations with Deflation and Low-mode Substitution

xQCD

Collaboration

•

A. Li
(
- Duke U. and
- Kentucky U.
)

et al.

- Phys.Rev.D 82 (2010) 114501
•
e-Print:
- 1005.5424
•
DOI:
- 10.1103/PhysRevD.82.114501

Analytic smearing of SU(3) link variables in lattice QCD

- Phys.Rev.D 69 (2004) 054501
•
e-Print:
- hep-lat/0311018
•
DOI:
- 10.1103/PhysRevD.69.054501

On the low fermionic eigenmode dominance in QCD on the lattice

H. Neff
(
- Julich, NIC
)
,
N. Eicker
(
- Wuppertal U.
)
,
T. Lippert
(
- Wuppertal U.
)
,
John W. Negele
(
- MIT, LNS
)
,
K. Schilling
(
- Julich, NIC and
- Wuppertal U.
)

- Phys.Rev.D 64 (2001) 114509
•
e-Print:
- hep-lat/0106016
•
DOI:
- 10.1103/PhysRevD.64.114509

Numerical methods for the QCD overlap operator. 3. Nested iterations

Nigel Cundy
(
- Wuppertal U.
)
,
Jasper van den Eshof
(
- Heinrich Heine U., Dusseldorf
)
,
Andreas Frommer
(
- Wuppertal U., Dept. Math.
)
,
Stephan Krieg
(
- Wuppertal U.
)
,
Th. Lippert
(
- ZAM, Julich
)

et al.

- Comput.Phys.Commun. 165 (2005) 221-242
•
e-Print:
- hep-lat/0405003
•
DOI:
- 10.1016/j.cpc.2004.10.005

Hadron electric polarizability -- finite volume corrections

- PoS LATTICE2010 (2010) 131
•
e-Print:
- 1011.6309

NLO and NNLO chiral fits for 2+1 flavor DWF ensembles

RBC and
UKQCD

Collaborations

•

Robert Mawhinney

for the collaborations.

- PoS LAT2009 (2009) 081,
- PoS LAT2009:081,2009
•
e-Print:
- 0910.3194
•
DOI:
- 10.22323/1.091.0081