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2012

QCD With A Chemical Potential, Topology, And The 't Hooft 1/N Expansion

Armoni, Adi, Patella, Agostino

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We discuss the dependence of observables on the chemical potential in 't Hooft's large-N QCD.

To this end we use the worldline formalism to expand the fermionic determinant in powers of 1/N.
We consider the hadronic as well as the deconfining phase of the theory.
We discuss the origin of the sign problem in the worldline approach and elaborate on the planar equivalence between QCD with a baryon chemical potential and QCD with an isospin chemical potential.

QCD With A Chemical Potential, Topology, And The 't Hooft 1/N Expansion · Around

Built on

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L. McLerran and R. D. Pisarski, “Phases of cold, dense quarks at large N(c),” Nucl. Phys. A 796
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2007
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A. Armoni, “Beyond The Quenched (or Probe Brane) Approximation in Lattice (or Holographic) QCD,” Phys. Rev. D 78
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2008
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P. Cea, L. Cosmai, M. D’Elia, A. Papa and F. Sanfilippo, “The critical line of two-flavor QCD at finite isospin or baryon densities from imaginary chemical potentials,” arXiv:1202.5700 [hep-lat]

Cited in the paper.