Journal Article

FZJ-2019-00077

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Applying constrained simulations for low temperature lattice QCD at finite baryon chemical potential

Endrődi, G. ; Fodor, Z. ; Katz, S. D. ; Sexty, D.FZJ* ; Szabo, K.FZJ* ; Török, C.FZJ*

2018
Inst.812068 Melville, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/21114  doi:10.1103/PhysRevD.98.074508

Abstract: We study the density of states method as well as reweighting to explore the low temperature phase diagram of QCD at finite baryon chemical potential. We use four flavors of staggered quarks, a tree-level Symanzik-improved gauge action, and four stout smearing steps on lattices with Ns=4, 6, 8 and Nt=6–16. We compare our results to that of the phase quenched ensemble and also determine the pion and nucleon masses. In the density of states approach, we apply pion condensate or gauge action density fixing. We find that the density of states method performs similarly to reweighting. At T≈100  MeV, we find an indication of the onset of the quark number density at around μ/mN∼0.16–0.18 on 64 lattices at β=2.9.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)
2. John von Neumann - Institut für Computing (NIC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. Search for traces of the critical endpoint in QCD (hwu32_20171101) (hwu32_20171101)

Appears in the scientific report 2018

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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