title: Modification of late-time phase structure by quantum quenches.
abstract: The consequences of the sudden change in the coupling constants (quenches) on the phase structure of the theory at late times are explored. We study in detail the three-dimensional φ6 model in the large-N limit and show that the φ6 coupling enjoys a widened range of stability compared to the static scenario. Moreover, a new massive phase emerges, which for sufficiently large coupling becomes the dominant vacuum. We argue that these novel phenomena cannot be described by a simple thermalization effect or the emergence of a single effective temperature.
authors.affiliation: Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada.
authors.forename: Ling-Yan
authors.initials: LY
authors.lastname: Hung
authors.forename: Michael
authors.initials: M
authors.lastname: Smolkin
authors.forename: Evgeny
authors.initials: E
authors.lastname: Sorkin