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DPG

München 2009 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 23: Theoretische Astroteilchenphysik und Kosmologie 2

T 23.3: Vortrag

Dienstag, 10. März 2009, 17:15–17:30, M114

The cosmological QCD phase transition in a more general setting — •Tillmann Boeckel — Universität Heidelberg

We study the QCD phase transition in the early universe in a more general setting than it has been previously done. The common expectation nowadays is that this transition was probably a smooth crossover with little observable consequences for cosmology. We show that this is not necessarily true and that the impact on structure formation, properties of dark matter, production of primordial magnetic fields and gravitational waves can in fact be larger than it has been previously calculated and that it can influence a wide range of cosmological scales. Furthermore we give an outlook on how we will refine the ansatz within a field theoretical approach.

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