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Title: Stochastic reconstructions of spectral functions: Application to lattice QCD

Abstract

Here, we present a detailed study of the applications of two stochastic approaches, stochastic optimization method (SOM) and stochastic analytical inference (SAI), to extract spectral functions from Euclidean correlation functions. SOM has the advantage that it does not require prior information. On the other hand, SAI is a more generalized method based on Bayesian inference. Under mean field approximation SAI reduces to the often-used maximum entropy method (MEM), and for a specific choice of the prior SAI becomes equivalent to SOM. To test the applicability of these two stochastic methods to lattice QCD, Firstly, we apply these methods to various reasonably chosen model correlation functions, and present detailed comparisons of the reconstructed spectral functions obtained from SOM, SAI and MEM. Next, we present similar studies for charmonia correlation functions obtained from lattice QCD computations using clover-improved Wilson fermions on large, fine, isotropic lattices at 0:75 and 1:5Tc, Tc being the deconfinement transition temperature of a pure gluon plasma. We find that SAI and SOM give consistent results to MEM at these two temperatures.

Authors:
 [1];  [2];  [3];  [4];  [1]
  1. Central China Normal Univ., Wuhan (China)
  2. Central China Normal Univ., Wuhan (China); Univ. Bielefeld, Bielefeld (Germany)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Tsukuba, Ibaraki (Japan)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1462432
Alternate Identifier(s):
OSTI ID: 1436822
Report Number(s):
BNL-207877-2018-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; TRN: US1902174
Grant/Contract Number:  
SC0012704; SC001270
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Ding, H. -T., Kaczmarek, O., Mukherjee, Swagato, Ohno, H., and Shu, H. -T. Stochastic reconstructions of spectral functions: Application to lattice QCD. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.094503.
Ding, H. -T., Kaczmarek, O., Mukherjee, Swagato, Ohno, H., & Shu, H. -T. Stochastic reconstructions of spectral functions: Application to lattice QCD. United States. https://doi.org/10.1103/PhysRevD.97.094503
Ding, H. -T., Kaczmarek, O., Mukherjee, Swagato, Ohno, H., and Shu, H. -T. Thu . "Stochastic reconstructions of spectral functions: Application to lattice QCD". United States. https://doi.org/10.1103/PhysRevD.97.094503. https://www.osti.gov/servlets/purl/1462432.
@article{osti_1462432,
title = {Stochastic reconstructions of spectral functions: Application to lattice QCD},
author = {Ding, H. -T. and Kaczmarek, O. and Mukherjee, Swagato and Ohno, H. and Shu, H. -T.},
abstractNote = {Here, we present a detailed study of the applications of two stochastic approaches, stochastic optimization method (SOM) and stochastic analytical inference (SAI), to extract spectral functions from Euclidean correlation functions. SOM has the advantage that it does not require prior information. On the other hand, SAI is a more generalized method based on Bayesian inference. Under mean field approximation SAI reduces to the often-used maximum entropy method (MEM), and for a specific choice of the prior SAI becomes equivalent to SOM. To test the applicability of these two stochastic methods to lattice QCD, Firstly, we apply these methods to various reasonably chosen model correlation functions, and present detailed comparisons of the reconstructed spectral functions obtained from SOM, SAI and MEM. Next, we present similar studies for charmonia correlation functions obtained from lattice QCD computations using clover-improved Wilson fermions on large, fine, isotropic lattices at 0:75 and 1:5Tc, Tc being the deconfinement transition temperature of a pure gluon plasma. We find that SAI and SOM give consistent results to MEM at these two temperatures.},
doi = {10.1103/PhysRevD.97.094503},
journal = {Physical Review D},
number = 9,
volume = 97,
place = {United States},
year = {Thu May 10 00:00:00 EDT 2018},
month = {Thu May 10 00:00:00 EDT 2018}
}

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Cited by: 13 works
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Works referenced in this record:

Production of soft dileptons in the quark-gluon plasma
journal, May 1990


Infinite temperature limit of meson spectral functions calculated on the lattice
journal, July 2003


Measurements of dielectron production in Au + Au collisions at s N N = 200 GeV from the STAR experiment
journal, August 2015


Lattice constraints on the thermal photon rate
journal, July 2016


Charmonium at high temperature in two-flavor QCD
journal, November 2007


Chiral and deconfinement aspects of the QCD transition
journal, March 2012


Scalable replica-exchange framework for Wang-Landau sampling
journal, August 2014


Källén-Lehmann spectroscopy for (un)physical degrees of freedom
journal, January 2014


Maximum entropy analysis of the spectral functions in lattice QCD
journal, January 2001


Thermal quarkonium physics in the pseudoscalar channel
journal, November 2017

  • Burnier, Y.; Ding, H. -T.; Kaczmarek, O.
  • Journal of High Energy Physics, Vol. 2017, Issue 11
  • DOI: 10.1007/JHEP11(2017)206

Bayesian inference and the analytic continuation of imaginary-time quantum Monte Carlo data
journal, May 1996


Bayesian Approach to Spectral Function Reconstruction for Euclidean Quantum Field Theories
journal, October 2013


Diagrammatic quantum Monte Carlo study of the Fröhlich polaron
journal, September 2000


In-medium dispersion relations of charmonia studied by the maximum entropy method
journal, January 2017


Charmonium properties in hot quenched lattice QCD
journal, July 2012


Nonperturbative estimate of the heavy quark momentum diffusion coefficient
journal, December 2015


J / ψ Production versus Centrality, Transverse Momentum, andRapidity in Au + Au Collisions at s N N = 200 GeV
journal, June 2007


Charge transport and vector meson dissociation across the thermal phase transition in lattice QCD with two light quark flavors
journal, March 2016


Continuum and lattice meson spectral functions at nonzero momentum and high temperature
journal, October 2005


Suppression of high transverse momentum D mesons in central Pb-Pb collisions at $ \sqrt{{{s_{\mathrm{NN}}}}}=2.76\;\mathrm{TeV} $
journal, September 2012

  • Abelev, B.; Adam, J.; Adamová, D.
  • Journal of High Energy Physics, Vol. 2012, Issue 9
  • DOI: 10.1007/JHEP09(2012)112

Constant contribution in meson correlators at finite temperature
journal, May 2007


Thermodynamics of strong-interaction matter from lattice QCD
journal, October 2015

  • Ding, Heng-Tong; Karsch, Frithjof; Mukherjee, Swagato
  • International Journal of Modern Physics E, Vol. 24, Issue 10
  • DOI: 10.1142/S0218301315300076

Suppression of non-prompt J/ψ, prompt J/ψ, and $ \Upsilon $ (1S) in PbPb collisions at $ \sqrt {{{s_{\text{NN}}}}} = 2.76 $ TeV
journal, May 2012

  • Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.
  • Journal of High Energy Physics, Vol. 2012, Issue 5
  • DOI: 10.1007/JHEP05(2012)063

Analytic continuation of quantum Monte Carlo data by stochastic analytical inference
journal, May 2010


The order of the quantum chromodynamics transition predicted by the standard model of particle physics
journal, October 2006


Dielectron production in Au + Au collisions at s N N = 200 GeV
journal, January 2016


Thermal dilepton rates and electrical conductivity of the QGP from the lattice
journal, August 2016