Preprint

GSI-2024-00351

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png QCD Anderson transition with overlap valence quarks on a twisted-mass sea

Kehr, R. (Corresponding author) ; Smith, D.GSI* ; von Smekal, L.

2023

Report No.: arXiv:2304.13617

Abstract: In this work we probe the QCD Anderson transition by studying spectral distributions of the massless overlap operator on gauge configurations created by the twisted mass at finite temperature collaboration (tmfT) with 2+1+1 flavors of dynamical quarks and the Iwasaki gauge action. We assess finite-size and discretization effects by considering two different lattice spacings and several physical volumes, and mimic the approach to the continuum limit through stereographic projection. Fitting the inflection points of the participation ratios of the overlap Dirac eigenmodes, we obtain estimates of the temperature dependence of the mobility edge, below which quark modes are localized. We observe that it is well-described by a quadradic polynomial and systematically vanishes at temperatures below the pseudo-critical one of the chiral transition. In fact, our best estimates within errors overlap with that of the chiral phase transition temperature of QCD in the chiral limit.

Note: 14 pages, 15 figures, revised version with edits, added references and new 'Discussion' section in response to comments received, results unchanged

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Contributing Institute(s):

1. CBM (CBM)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)
2. EURIZON - European network for developing new horizons for RIs (871072) (871072)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2023

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Kehr, R. (Corresponding author) ; Smith, D.GSI* ; von Smekal, L.
QCD Anderson transition with overlap valence quarks on a twisted-mass sea
Physical review / D 109(7), 074512 (2024) [10.1103/PhysRevD.109.074512]2024   Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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