HirosiFest @ Kavli IPMU

Contribution List

1. Cumrun Vafa (Harvard)

10/20/22, 9:10 AM

[chair: Masahito Yamazaki (Kavli IPMU)]

"Swampland and the Dark Sector"

2. Hitoshi Murayama (UC Berkeley/Kavli IPMU)

10/20/22, 10:20 AM

[chair: Masahito Yamazaki (Kavli IPMU)]

3. Jaewon Song (KAIST)

10/20/22, 11:40 AM

[chair: Yuji Tachikawa (Kavli IPMU)]

"a vs c in the 4d SCFT landscape"

The central charges of conformal field theories capture many interesting aspects of the dynamics. In this talk, I will discuss aspects of central charges in the landscape of 4d superconformal theories. We find that the scaling behavior of a and c for the large N limit of superconformal gauge theories (with simple...

5. Masahito Yamazaki (Kavli IPMU)

10/20/22, 2:00 PM

[chair: Yuji Tachikawa (Kavli IPMU)]

6. Yu Nakayama (Rikkyo)

10/20/22, 3:10 PM

[chair: Takuya Okuda (Tokyo)]

"(Topological) Twist and Scale vs Conformal invariance"

(Topological) twisting a conformal field theory admits more deformations than its original theory. We argue that such deformations often lead to scale-invariant but non-conformal fixed points. One physical example is to allow spin-orbit interaction in the Heisenberg magnet, leading to scale-invariant...

7. Ashoke Sen (ICTS)

10/20/22, 4:10 PM

[chair: Takuya Okuda (Tokyo)]

8. Takuya Okuda (Tokyo)

10/21/22, 9:00 AM

[chair: Jaewon Song (KAIST)]

"Measurement-based quantum simulation of gauge theories"

Numerical simulation of lattice gauge theories is an indispensable tool in high energy physics, and their quantum simulation is expected to become a major application of quantum computers in the future. In this talk, I show that sequential single-qubit measurements with the bases adapted according to...

9. Tadashi Takayanagi (YITP, Kyoto)

10/21/22, 10:10 AM

[chair: Jaewon Song (KAIST)]

"CFT Dual of dS3 and Pseudo Entropy"

We propose a holographic duality for gravity on a three-
dimensional de Sitter space. This is essentially given by a k=-2 limit
of SU(2) WZW model. We show that this proposal reproduces the expected
free energy in de Sitter gravity. We also analyze the geodesic length in
the three dimensional de Sitter spacetime and...

10. Yuji Okawa (Tokyo)

10/21/22, 11:30 AM

[chair: Simeon Hellerman (Kavli IPMU)]

Correlation functions of scalar field theories from homotopy algebras

When actions are written in terms of homotopy algebras such as A_infinity algebras and L_infinity algebras, expressions of on-shell scattering amplitudes in perturbation theory are universal for both string field theories and ordinary field theories. We thus expect that homotopy...

11. Yuji Tachikawa (Kavli IPMU)

10/21/22, 1:50 PM

[chair: Simeon Hellerman (Kavli IPMU)]

On heterotic 6-branes "without vector structure"

Assuming that string theory has dynamical objects carrying all possible charges, there should be 6-branes in heterotic so(32) theory such that the gauge configuration on their radial direction S^2 is "without vector structure", i.e. is not an SO(32) gauge configuration. We discuss some of their...

12. Sakura Schafer-Nameki (Oxford)

10/21/22, 3:10 PM

[chair: Cumrun Vafa (Harvard)]

"On Symmetries."

I will give a summary of some of the exciting recent developments on generalizations of symmetries in quantum field theories, most notably non-invertible or more generally categorical symmetries. For theories that have a string theoretic realization, I will discuss how these structures are implemented in this context and arise naturally...

13. Eric Perlmutter (Saclay)

10/21/22, 4:10 PM

[chair: Cumrun Vafa (Harvard)]

Features & Fantasies of Moduli Dependence in CFT

4. Lunch