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We study the effects of CP violation on the nature of the chiral transition within the linear sigma model with two flavors of quarks.
- The finite-temperature effective potential containing contributions from nontrivial values for the parameter $\theta$ is computed to one loop order and their minima structure is analyzed.
- Motivated by the possibility of observing the formation of CP-odd domains in high-energy heavy ion collisions, we also investigate the behavior of the effective potential in the presence of a strong magnetic background.
- We find that the nature of the chiral transition is influenced by both $\theta$ and the magnetic field.
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