New dual representation for staggered lattice QCD

Gagliardi G, Unger W (2020)
PHYSICAL REVIEW D 101(3): 034509.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
We propose a new strategy to evaluate the partition function of lattice QCD with Wilson gauge action coupled to staggered fermions, based on a strong coupling expansion in the inverse bare gauge coupling beta = 2N/g(2). Our method makes use of the recently developed formalism to evaluate the SU(N) 1-link integrals and consists in an exact rewriting of the partition function in terms of a set of additional dual degrees of freedom which we call "decoupling operator indices" (DOI). The method is not limited to any particular number of dimensions or gauge group U(N), SU(N). In terms of the DOI, the system takes the form of a tensor network which can be simulated using wormlike algorithms. Higher order beta-corrections to strong coupling lattice QCD can be, in principle, systematically evaluated, helping to answer the question whether the finite density sign problem remains mild when plaquette contributions are included. Issues related to the complexity of the description and strategies for the stochastic evaluation of the partition function are discussed.
Erscheinungsjahr
2020
Zeitschriftentitel
PHYSICAL REVIEW D
Band
101
Ausgabe
3
Art.-Nr.
034509
ISSN
2470-0010
eISSN
2470-0029
Page URI
https://pub.uni-bielefeld.de/record/2941610

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Gagliardi G, Unger W. New dual representation for staggered lattice QCD. PHYSICAL REVIEW D. 2020;101(3): 034509.
Gagliardi, G., & Unger, W. (2020). New dual representation for staggered lattice QCD. PHYSICAL REVIEW D, 101(3), 034509. doi:10.1103/PhysRevD.101.034509
Gagliardi, G., and Unger, W. (2020). New dual representation for staggered lattice QCD. PHYSICAL REVIEW D 101:034509.
Gagliardi, G., & Unger, W., 2020. New dual representation for staggered lattice QCD. PHYSICAL REVIEW D, 101(3): 034509.
G. Gagliardi and W. Unger, “New dual representation for staggered lattice QCD”, PHYSICAL REVIEW D, vol. 101, 2020, : 034509.
Gagliardi, G., Unger, W.: New dual representation for staggered lattice QCD. PHYSICAL REVIEW D. 101, : 034509 (2020).
Gagliardi, Giuseppe, and Unger, Wolfgang. “New dual representation for staggered lattice QCD”. PHYSICAL REVIEW D 101.3 (2020): 034509.

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arXiv: 1911.08389

Inspire: 1766089

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