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Flavored Quantum Boltzmann Equations

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arxiv 0912.3523 v2 pith:ZRW6JJDP submitted 2009-12-18 hep-ph

Flavored Quantum Boltzmann Equations

Vincenzo Cirigliano , Christopher Lee , Michael J. Ramsey-Musolf , Sean Tulin This is my paper
classification hep-ph
keywords boltzmannequationscollisionsflavormassmatrixmodelnon-trivial
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We derive from first principles, using non-equilibrium field theory, the quantum Boltzmann equations that describe the dynamics of flavor oscillations, collisions, and a time-dependent mass matrix in the early universe. Working to leading non-trivial order in ratios of relevant time scales, we study in detail a toy model for weak scale baryogenesis: two scalar species that mix through a slowly varying time-dependent and CP-violating mass matrix, and interact with a thermal bath. This model clearly illustrates how the CP asymmetry arises through coherent flavor oscillations in a non-trivial background. We solve the Boltzmann equations numerically for the density matrices, investigating the impact of collisions in various regimes.

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Cited by 3 Pith papers

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  3. One-Zero Neutrino Textures and Resonant Type-II Leptogenesis: Flavor-Resolved Thermal Evolution and Baryon Asymmetry

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