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Cosmology with broken Null Energy Condition

KMI Theory Seminar
2012-11-29 17:00
Alexander Vikman
KMI Science Symposia (ES635)

In this talk I will discuss theories where the weakest of all classical
energy conditions — the Null Energy Condition (NEC) — is violated.
These theories have rather peculiar unintuitive properties and therefore
allow for quite exotic cosmological scenarios – bounces etc. providing
new theoretical opportunities for the origin of our universe. On the
other hand, for the contemporary universe, the NEC can put a bound on
non-ideal parts of the Dark Energy’s (DE) energy momentum tensor. This
talk is based on arXiv:1109.1047 and arXiv:1209.2961.