CP Violation in the Linear Sigma Model

Abstract

Motivated by the possibility of the formation of CP-odd domains in heavy ion collisions, we investigate the effects of CP violation on the chiral transition within the linear sigma model with two flavors of quarks. We also study how the CP-odd system is affected by the presence of a strong magnetic field, that is presumably generated in a non-central heavy ion collision. We find that both ingredients play an important role, influencing drastically the nature of the phase transition and the critical temperature.

4 pages

References in corpus (4)

• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Charge separation induced by P-odd bubbles in QCD matter
• Chiral transition in a strong magnetic background
• Spontaneous CP-violation in the strong interaction at theta = pi

Cited by in corpus (10)

• Estimate of the magnetic field strength in heavy-ion collisions
• Electric-current Susceptibility and the Chiral Magnetic Effect
• Dielectric correction to the Chiral Magnetic Effect
• Theta vacuum effects on QCD phase diagram
• Quantum chromodynamics axion in a hot and magnetized medium
• CP violation and chiral symmetry breaking in hot and dense quark matter in presence of magnetic field
• Violations of parity and charge conjugation in the theta vacuum with imaginary chemical potential
• Exploring Dense and Cold QCD in Magnetic Fields
• Spontaneous parity and charge-conjugation violations at real isospin and imaginary baryon chemical potentials
• Strong CP violation and chiral symmetry breaking in hot and dense quark matter