HIP NEWS September 26th 2016
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DEPARTMENT OF PHYSICS / HIP JOINT COLLOQUIA / SEMINARS
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Tuesday 27 September 2016 at 10.15 in A315
Christian Ecker (TU Wien)
Exploring nonlocal observables in shock wave collisions
Abstract: We study the time evolution of 2-point functions and entanglement entropy in holographic shock wave collisions which are frequently used as toy models for heavy ion collisions. We discriminate between three classes of initial conditions corresponding to wide, intermediate and narrow shocks and show that they exhibit different phenomenology with respect to the nonlocal observables that we determine. Surprisingly, we found that 2-point functions can be sensitive to the inside of the black hole apparent horizon on the gravity side, while we did not find such cases for the entanglement entropy. This talk is based on arXiv:hep-th/1609.03676.
COSMO-seminar
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Wednesday 28 September 2016 at 14.15 in A315
Matteo Viel (OATS Trieste)
Cosmology with the Intergalactic Medium
Abstract: I will review the role of intergalactic matter between galaxies as a cosmological observable to address fundamental physical questions: nature of dark matter, masses of neutrinos and the cosmic cycle of baryons.
Finnish for international personnel, autumn 2016
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The AUTUMN 2016 course programme is available at helsinki.fi/finnishcourses
Registration form https://flamma.helsinki.fi/en/notifications/finnish-autumn16
Please check also http://www.helsinki.fi/trainingcalendar
Visitors
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F. Bezrukov 30.9. – 5.10. (FM)
M. Viel 26.9. – 29.9.2016 (FM)