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Constraints for the QCD phase diagram from imaginary chemical potential · Around

2010

Constraints for the QCD phase diagram from imaginary chemical potential

Philipsen, Owe, de Forcrand, Philippe

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We present unambiguous evidence from lattice simulations of N_f=3 QCD for two tricritical points in the (T,m) phase diagram at fixed imaginary \mu/T=i\pi/3 mod.

2\pi/3, one in the light and one in the heavy quark regime.
Together with similar results in the literature for N_f=2 this implies the existence of a chiral and of a deconfinement tricritical line at those values of imaginary chemical potentials.
These tricritical lines represent the boundaries of the analytically continued chiral and deconfinement critical surfaces, respectively, which delimit the parameter space with first order phase transitions.

Built on

I.D. Lawrie and S. Sarbach, in Phase transitions and critical phenomena
1984
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A. M. Ferrenberg and R. H. Swendsen, Phys. Rev. Lett. 63
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A. Billoire, T. Neuhaus and B. Berg, Nucl. Phys. B 396
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Similar

P. de Forcrand and O. Philipsen, Nucl. Phys. B 642
2002
Cited alongside, same era.
M. D’Elia and M. P. Lombardo, Phys. Rev. D 67
2003
Cited alongside, same era.
S. Kim et al.,PoS LAT2005
2006
Cited alongside, same era.
P. de Forcrand and O. Philipsen, JHEP 0701
2007
Cited alongside, same era.
J. Langelage and O. Philipsen, arXiv:0911.2577 [hep-lat]
Original
Cited in the paper.
M. D’Elia and F. Sanfilippo, arXiv:0909.0254 [hep-lat]
Original
Cited in the paper.

Then

M. D’Elia, F. Di Renzo and M. P. Lombardo, Phys. Rev. D 76
Original
2007
Later among the works it cites.
P. de Forcrand and O. Philipsen, JHEP 0811
Original
2008
Later among the works it cites.
O. Philipsen, PoS LAT2005
Original
2009
Later among the works it cites.
H. Kouno et al.,J. Phys. G 36
Original
2009
Later among the works it cites.

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