New Noise Subtraction Methods in Lattice QCD - INSPIRE

DataBETA

New Noise Subtraction Methods in Lattice QCD

Oct 27, 2016

7 pages

Part of Proceedings, 34th International Symposium on Lattice Field Theory (Lattice 2016) : Southampton, UK, July 24-30, 2016, 355

Published in:

PoS LATTICE2016 (2016) 355

Contribution to:

- Lattice 2016
, 355

Published: Oct 27, 2016 by SISSA

e-Print:

1611.01536 [hep-lat]

DOI:

10.22323/1.256.0355

Report number:

BU-HEPP-16-07

View in:

ADS Abstract Service

reference search4 citations

Citations per year

Abstract: (arXiv)

Noise subtraction techniques can help reduce the statistical uncertainty in the extraction of hard to detect signals. We describe new noise subtraction methods in Lattice QCD which apply to disconnected diagram evaluations. Some of the noise suppression techniques include polynomial quark matrix methods, eigenspectrum deflation methods, and combination methods. Our most promising technique combines polynomial and Hermitian deflation subtraction methods. The overall goal is to improve the efficiency of Lattice QCD noise method algorithms.

Note:

7 pages, 3 figures, Lattice 2016

noise: suppression
quantum chromodynamics: lattice
error: statistical
numerical methods: efficiency
quark: Wilson
approximation: quenching

References(9)

Figures(3)

[1]

Numerical Challenges in Lattice Quantum Chromodynamics, Lecture Notes in Comp. Sci. and Eng. 15, 127

W. Wilcox

[2]

Monte Carlo methods for estimating linear combinations of inverse matrix entries in lattice QCD

- Comput.Phys.Commun. 78 (1993) 256-264
•
DOI:
- 10.1016/0010-4655(94)90004-3

[3]

Eigenspectrum Noise Subtraction Methods in Lattice QCD

- PoS LAT2009 (2009) 041
•
e-Print:
- 1001.4366
•
DOI:
- 10.22323/1.091.0041

[4]

(doctoral dissertation)

V. Guerrero

[5]

Polynomial Subtraction Method for Disconnected Quark Loops

Quan Liu
(
- Baylor U. and
- Baylor U., Math. Dept.
)
,
Walter Wilcox
(
- Baylor U. and
- Baylor U., Math. Dept.
)
,
Ron Morgan
(
- Baylor U. and
- Baylor U., Math. Dept.
)

e-Print:
- 1405.1763

[6]

R.B. Morgan

- SIAM J.Sci.Comput. 24 (2002) 20

[6]

Lin. Alg. and its Appl. 429, 2415

D. Darnell
,
R.B. Morgan
,
W. Wilcox

[7]

Deflation methods in fermion inverters

Walter M. Wilcox
(
- Baylor U.
)

- PoS LATTICE2007 (2007) 025
•
e-Print:
- 0710.1813
•
DOI:
- 10.22323/1.042.0025

[8]

Deflation as a Method of Variance Reduction for Estimating the Trace of a Matrix Inverse

Arjun Singh Gambhir
(
- Jefferson Lab and
- William-Mary Coll.
)
,
Andreas Stathopoulos
(
- William-Mary Coll.
)
,
Kostas Orginos
(
- Jefferson Lab and
- William-Mary Coll.
)

- SIAM J.Sci.Comput. 39 (2017) 2, A532-A558
•
e-Print:
- 1603.05988
•
DOI:
- 10.1137/16M1066361