Exponential reduction of finite volume effects with twisted boundary conditions

Aleksey Cherman; Srimoyee Sen; Michael L. Wagman; Laurence G. Yaffe

doi:10.1103/PhysRevD.95.074512

Exponential reduction of finite volume effects with twisted boundary conditions

Aleksey Cherman, Srimoyee Sen, Michael L. Wagman, Laurence G. Yaffe

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Flavor-twisted boundary conditions can be used for exponential reduction of finite volume artifacts in flavor-averaged observables in lattice QCD calculations with SU(Nf) light quark flavor symmetry. Finite volume artifact reduction arises from destructive interference effects in a manner closely related to the phase averaging which leads to large Nc volume independence. With a particular choice of flavor-twisted boundary conditions, finite volume artifacts for flavor-singlet observables in a hypercubic spacetime volume are reduced to the size of finite volume artifacts in a spacetime volume with periodic boundary conditions that is four times larger.

Original language	English (US)
Article number	074512
Journal	Physical Review D
Volume	95
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.95.074512
State	Published - Apr 1 2017
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported in part by the U.S. Department of Energy under Awards No. DE-FG02-00ER-41132 (A. C.), No. DE-FG02-04ER41338 (S. S.), No. DE-FG02-00ER41132 (M. L. W) and No. DE-SC0011637 (L. G. Y).

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© 2017 American Physical Society.

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10.1103/PhysRevD.95.074512

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abstract = "Flavor-twisted boundary conditions can be used for exponential reduction of finite volume artifacts in flavor-averaged observables in lattice QCD calculations with SU(Nf) light quark flavor symmetry. Finite volume artifact reduction arises from destructive interference effects in a manner closely related to the phase averaging which leads to large Nc volume independence. With a particular choice of flavor-twisted boundary conditions, finite volume artifacts for flavor-singlet observables in a hypercubic spacetime volume are reduced to the size of finite volume artifacts in a spacetime volume with periodic boundary conditions that is four times larger.",

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Exponential reduction of finite volume effects with twisted boundary conditions

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