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IPM
30
YEARS OLD

“School of Physic”

Paper   IPM / Physic / 15685
   School of Physics
  Title: Universal Scaling in Fast Quenches Near Lifshitz-Like Fixed Points
  Author(s):
1 . M.R. Mohammadi Mozaffar
2 . A. Mollabashi
  Status: Preprint
  Journal:
  Year: 2019
  Supported by: IPM
  Abstract:
We study critical dynamics through time evolution of quantum 000Cfield theories driven to a Lifshitz- like fi000Cxed point, with z > 1, under relevant deformations. The deformations we consider are fast smooth quantum quenches, namely when the quench scale t ^-z is large compared to the deformation scale. We show that in holographic models the response of the system merely depends on the scaling dimension of the quenched operator as . t^d-2Δ+z-1, where is the deformation amplitude. This scaling behavior is enhanced logarithmically in certain cases. We also study free Lifshitz scalar theory deformed by mass operator and show that the universal scaling of the response completely matches with holographic analysis. We argue that this scaling behavior is universal for any relevant deformation around Lifshitz-like UV fi000Cxed points.

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