Title:
“The phase of UV complete theories at high temperature”
Abstract:
Although in most cases symmetries are restored at high temperature, this is not always the case. This counter-intuitive phenomenon of symmetry non-restoration has been observed in some systems and can solve some well known cosmological problems. The models used in these cases have been so far effective theories believed to be valid below the physical cutoff of the Planck scale and so their extreme UV behaviour was not important. In this seminar I will try to see how difficult it is, if possible at all, to construct UV complete theories with symmetry non-restoration at high temperature.
Slides