• Open Access

Towards a semiclassical description of QCD vacuum around Tc

Rasmus N. Larsen, Sayantan Sharma, and Edward Shuryak
Phys. Rev. D 102, 034501 – Published 3 August 2020

Abstract

We study the vacuum topology of 2+1 flavor QCD above the chiral crossover transition, at T1.2Tc, on lattices of size 323×8. Since overlap fermions have exact chiral symmetry and an index theorem even on a finite lattice, we use them to detect the topological content of gauge fields generated using domain wall fermion discretization for quarks. We further use different periodicity phases along the temporal direction for the valence overlap quarks, which allows us to probe different topological structures present in the gauge field ensembles, through their zero modes. Through this procedure we provide some first evidences that fermion zero modes can be understood to arise due to different species of instanton-dyons. We resolve the so-called “topological clusters” via multiparameter fits to their density, providing therefore an understanding of the interactions between instanton-dyons. The typical separation between dyons we obtain, is 0.3fm. Surprisingly, it emerges out from this study that a semiclassical description of the fermionic zero modes in the QCD vacuum may be possible, just above Tc.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
4 More
  • Received 14 January 2020
  • Accepted 17 July 2020

DOI:https://doi.org/10.1103/PhysRevD.102.034501

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Techniques
Nuclear Physics

Authors & Affiliations

Rasmus N. Larsen*

  • Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA

Sayantan Sharma

  • The Institute of Mathematical Sciences, HBNI, Chennai 600113, India

Edward Shuryak

  • Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794, USA

  • *rlarsen@bnl.gov
  • sayantans@imsc.res.in
  • edward.shuryak@stonybrook.edu

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 102, Iss. 3 — 1 August 2020

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×