Skip to main content

Back to newsletters

iTHEMS Weekly News Letter

Award

Dr. Tomoki Ozawa thumbnail

Dr. Tomoki Ozawa received 11th annual RIKEN Research Incentive Award (Ohbu Award)

2020-03-10

Tomoki Ozawa received "FY2019 Researcher Incentive Award (桜舞賞)" on March 10, 2020 for his achievements in the "Study of Geometric Effects in Synthetic Quantum Systems". Congratulations!

Announcement

Dr. Masato Taki thumbnail

Dr. Masato Taki wrote a Japanese article on the current stats of Deep Learning: "AI being Deceived" in Nikkei Science

2020-03-11

Dr. Masato Taki (iTHEMS) wrote a Japanese article on the current stats of Deep Learning: "AI being Deceived" in Nikkei Science (Jan. 2020).
This volume is in iTHEMS common room (246-248). Take a look it and enjoy his superb explanation on how AIs are fooled!

Upcoming Event

Seminar

Holography from field theories: a realization of AdS/CFT correspondence and beyond

March 18 at 13:30 - 14:30, 2020

Dr. Shinya Aoki (Professor, Yukawa Institute for Theoretical Physics, Kyoto University)

*Seminar room changed from 160 to 433.

We argue that the Anti-de-Sitter (AdS) geometry in $d+1$ dimensions naturally emerges from an arbitrary conformal field theory in $d$ dimensions using the free flow equation. We first show that an induced metric defined from the flowed field generally corresponds to the quantum information metric, called the Bures or Helstrom metric, if the flowed field is normalized appropriately. We next verify that the induced metric computed explicitly with the free flow equation always becomes the AdS metric when the theory is conformal. We also show that the conformal symmetry in $d$ dimensions converts to the AdS isometry in $d+1$ dimensions after $d$ dimensional quantum averaging. This guarantees the emergence of AdS geometry without explicit calculation.

We next apply this method to non-relativistic systems with anisotropic scaling symmetries, such as Lifshitz field theories and Schr\”odinger invariant theories. In consequence we obtain a new hybrid geometry of Lifshitz and Schr\”odinger spacetimes as a general holographic geometry. We also show that the bulk hybrid geometry is realized by an Einstein-Maxwell-Higgs system plus a gauge fixing term for diffeomorphism, which may be interpreted as a holographic dual of a general non-relativistic system at the boundary.

Venue: #433, Main Research Building, RIKEN

Event Official Language: Japanese

If you would like to cancel your subscription or change your email address,
please let us know via our contact form.