QCD critical region and higher moments for three-flavor models

Schaefer B-J, Wagner M (2012)
Physical Review D 85(3): 34027.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Schaefer, Bernd-Jochen; Wagner, MathiasUniBi
Abstract / Bemerkung
One of the distinctive features of the QCD phase diagram is the possible emergence of a critical endpoint. The critical region around the critical point and the path dependency of the critical exponents are investigated within effective chiral (2 + 1)-flavor models with and without Polyakov loops. Results obtained in no-sea mean-field approximations where a divergent vacuum part in the fermion-loop contribution is neglected are compared to the renormalized ones. Furthermore, the modifications caused by the backreaction of the matter fluctuations on the pure Yang-Mills system are discussed. Higher-order, non-Gaussian moments of event-by-event distributions of various particle multiplicities are enhanced near the critical point and could serve as a probe to determine its location in the phase diagram. By means of a novel derivative technique higher-order generalized quark-number susceptibilities are calculated and their sign structure in the phase diagram is analyzed.
Erscheinungsjahr
2012
Zeitschriftentitel
Physical Review D
Band
85
Ausgabe
3
Art.-Nr.
34027
ISSN
1550-7998
eISSN
1550-2368
Page URI
https://pub.uni-bielefeld.de/record/2489338

Zitieren

Schaefer B-J, Wagner M. QCD critical region and higher moments for three-flavor models. Physical Review D. 2012;85(3): 34027.
Schaefer, B. - J., & Wagner, M. (2012). QCD critical region and higher moments for three-flavor models. Physical Review D, 85(3), 34027. doi:10.1103/PhysRevD.85.034027
Schaefer, B. - J., and Wagner, M. (2012). QCD critical region and higher moments for three-flavor models. Physical Review D 85:34027.
Schaefer, B.-J., & Wagner, M., 2012. QCD critical region and higher moments for three-flavor models. Physical Review D, 85(3): 34027.
B.-J. Schaefer and M. Wagner, “QCD critical region and higher moments for three-flavor models”, Physical Review D, vol. 85, 2012, : 34027.
Schaefer, B.-J., Wagner, M.: QCD critical region and higher moments for three-flavor models. Physical Review D. 85, : 34027 (2012).
Schaefer, Bernd-Jochen, and Wagner, Mathias. “QCD critical region and higher moments for three-flavor models”. Physical Review D 85.3 (2012): 34027.

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arXiv: 1111.6871

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