Alternatives to the stochastic "noise vector" approach

Philippe de Forcrand, Benjamin Jaeger

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Abstract

Several important observables, like the quark condensate and the Taylor coefficients of the expansion of the QCD pressure with respect to the chemical potential, are based on the trace of the inverse Dirac operator and of its powers. Such traces are traditionally estimated with "noise vectors" sandwiching the operator. We explore alternative approaches based on polynomial approximations of the inverse Dirac operator.
Original languageEnglish
Article number14022
JournalE P J Web of Conferences
Volume175
Number of pages8
ISSN2100-014X
DOIs
Publication statusPublished - 26. Mar 2018
Event35th International Symposium on Lattice Field Theory - Granada, Spain
Duration: 18. Jun 201724. Jun 2017
Conference number: 35

Conference

Conference35th International Symposium on Lattice Field Theory
Number35
CountrySpain
CityGranada
Period18/06/201724/06/2017

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operators
condensates
polynomials
quantum chromodynamics
quarks
expansion
coefficients
approximation

Bibliographical note

Eight pages, thirteen figures. Proceedings of the 35th International Symposium on Lattice Field Theory

Cite this

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Alternatives to the stochastic "noise vector" approach. / Forcrand, Philippe de; Jaeger, Benjamin.

In: E P J Web of Conferences, Vol. 175, 14022, 26.03.2018.

Research output: Contribution to journalConference articleResearchpeer-review

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AB - Several important observables, like the quark condensate and the Taylor coefficients of the expansion of the QCD pressure with respect to the chemical potential, are based on the trace of the inverse Dirac operator and of its powers. Such traces are traditionally estimated with "noise vectors" sandwiching the operator. We explore alternative approaches based on polynomial approximations of the inverse Dirac operator.

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