Nagoya University
Theoretical Elementary Particle Physics Laboratory

E-lab Seminar


Date Mon Jun 17 2024
Speaker Tomonori Ugajin
(Rikkyo University)
Title Double Holography of Entangled Universes
Abstract We employ double holography to examine a system of two entangled gravitating universes that live on two codimension-one branes in an asymptotically AdS3 spacetime with two disjoint conformal boundaries. There are distinct brane configurations depending on the temperature of the thermofield double (TFD) state between the left and right systems. The topology transition between two branes is naturally identified with the emergence of an Einstein-Rosen bridge connecting the two entangled universes. This doubly holographic construction offers a holographic perspective on gravitational collapse and black hole formation in brane universes. Through this holographic framework, we analyze the quantum information structure of the two gravitating universes. Specifically, we calculate the mutual information between defects present in the boundary theories on the left and right sides. Furthermore, we investigate the decoupling process in the Hayden-Preskill protocol applied to the two copies of the defect field theory and discuss the interpretation of the Yoshida-Kitaev decoding protocol.
Remarks Zoom link:
Date Tue Jun 25 2024
Speaker Shohei Okawa
Title A ν window onto leptoquarks?
Abstract Upcoming neutrino telescopes promise a new window onto the interactions of neutrinos with matter at ultrahigh energies (Eν = 10^7–10^10 GeV), and the possibility to detect deviations from the Standard Model predictions. In this paper, we update previous predictions for the enhancement of the neutrino-nucleon cross-section for motivated leptoquark models and show the latest neutrino physics bound, as well as analyse the latest LHC pair production and Drell-Yan data, and flavour constraints (some of which were previously missed). We find that, despite the next generation of neutrino experiments probing the highest energies, they will not be enough to be competitive with collider searches.
Date Tue Jul 02 2024
Speaker Yixuan Li
(LMU Munich)
Title TBA
Date Mon Jul 08 2024
Speaker Soumitra Nandi
(IIT Guwahati)
Title TBA
Abstract TBA
Date Tue Jul 09 2024
Speaker Takashi Shimomura
(Miyazaki Univ.)
Title TBA
Date Mon Jul 22 2024
Speaker Natsumi Nagata
(Tokyo University)
Title TBA


Date Speaker Title Slide/Video
6/3 Takashi Hiramatsu
(Rikkyo University)
Dynamical simulations of colliding superconducting strings video1
5/28 Pak Hang Chris Lau
(Osaka U)
On the Backreaction of Dirac Matter in JT Gravity and SYK Model video1
5/21 Adil Jueid
New Physics Searches at Future Muon Colliders video1
5/13 Jonathan Harper
(YITP, Kyoto U)
Multi-trace measure in AdS3/CFT2 slide1
4/30 Takahiro Terada
(Nagoya Univ.)
Probing the early Universe with gravitational waves -- topics on pulsar timing arrays and induced gravitational waves -- video1
4/23 Syuhei Iguro
Recent progress in b->c tau nu video1
4/16 Hiromi Ebisu
(YITP, Kyoto University)
Fracton topological phases in view of multipole symmetry video1
2/27 Alessandro Valenti
(Basel U.)
Perturbative running of the topological angles
2/20 Tsunehide Kuroki
(Toyota Technological Institute)
Tensor Network of Kondo Problem and holography ー温故知新ー
2/6 Juan William Pedersen
(University of Tokyo)
Quantum Simulation of the Finite Temperature Schwinger Model via Quantum Imaginary Time Evolution
1/30 Kazuki Sakurai
(Warsaw University)
Quantum Information at Colliders
1/23 Yosuke Imamura
(Tokyo Institute of Technology)
Giant Graviton Expansions for Orbifolds and Orientifolds
1/16 Yoshihiro Shigekami
(Shanghai Jiao Tong University)
Probing CP Violation in Dark Sector through the Electron Electric Dipole Moment
1/9 Pratik Nandy
Operator growth and Quantum chaos in SYK model
Date Speaker Title Slide/Video
12/12 Junsei Tokuda
Gravitational positivity bounds: implications for the swampland program
12/5 Ryutaro Matsudo
(National Taiwan Univ.)
Missing final state puzzle in the monopole-fermion scattering
11/28 Satsuki Nishimura
(Kyushu University)
Exploring the flavor structure of quarks and leptons with reinforcement learning
11/21 Seok Kim
(Seoul National U)
Black hole cohomologies in N=4 Yang-Mills
11/14 Osamu Fukushima
(Kyoto University)
Higher-form symmetry and eigenstate thermalization hypothesis
11/8 Yasuaki Hikida
Complex saddles of three-dimensional de Sitter gravity via holography
10/31 Ayuki Kamada
(University of Warsaw)
Self-interacting dark matter: strong or resonant interaction
10/25 Kazumi Okuyama
(Shinshu University)
End of the world brane in double scaled SYK
10/17 Yuichiro Tada
(C-lab, Nagoya University)
Nano-Hertz stochastic gravitational wave background
10/10 Masataka Watanabe
(School of Informatics, Nagoya U)
Higher-spin conserved charges in large-charge sectors of generic 2D QFTs
10/4 Jean-Philippe Lansberg
Impact of QCD corrections to quarkonium production and outlook
10/3 Kate Lynch
Inclusive quarkonium photoproduction at the LHC via ultra-peripheral collisions
7/31 Motoko Fujiwara
Dark matter heating vs vortex creep heating in old neutron stars
7/24 Kazuki Tanaka
(Niigata University)
Neutrinoless double beta decay in the minimal seesaw mechanism
7/18 Justin Kaidi
(Univ. of Washington)
Non-Supersymmetric Heterotic Branes
7/4 Shanming Ruan
Complexity=Anything: Singularity Probes
6/26 Akihiro Ishibashi
(Kindai University)
Semiclassical Einstein equations from holography and boundary dynamics
6/19 Maki Takeuchi
(Kobe University)
The Mystery of the Standard Model and the Extra-Dimensional Model
6/12 Shoto Aoki
(Osaka Univ.)
Curved domain-wall fermion and its anomaly inflow
6/5 Tomohiro Abe
(Tokyo University of Science)
A pseudo-Nambu-Goldstone dark matter model and direct detection experiments
5/29 Kanato Goto
How do wormholes emerge from quantum gravity?
5/22 Naoya Kitajima
(Tohoku University)
Emission of dark photons and gravitational waves from cosmic string network
5/15 Shinya Kanemura
(Osaka Univ.)
Electroweak baryogenesis in the aligned two Higgs doublet model
5/8 Takumi Kuwahara
(Peking Univ. )
Quantum Theory of Dark Matter Scattering
5/1 Masaki Tezuka
(Kyoto University)
Binary-coupling sparse SYK model
4/24 Kazuhiro Sakai
(Meiji-gakuin University)
Spectral form factor in the tau-scaling limit
4/17 Yuya Kusuki
AdS/BCFT from Bootstrap
2/28 Ryuichiro Kitano
2/7 Kazuya Yonekura
(Tohoku University)
Cosmic strings from pure Yang-Mills theory
2/1 Kazuki Sakurai
(Warsaw Univ.)
Quantum information and CP measurement in H->tau,tau at future lepton colliders
1/18 Kentarou Mawatari
(Iwate University)
Helicity amplitudes without gauge cancellation in the Feynman-diagram gauge
1/10 Joan Simon
(Edinburgh U)
A proposal for 3d quantum gravity & its bulk factorization
Date Speaker Title Slide/Video
12/20 Masahiro Ibe
Gauge kinetic mixing and dark topological defects
12/6 Ofri Telem
(Hebrew U)
Dressed vs. Pairwise States, and the Geometric Phase of Monopoles and Charges
11/29 Bin Guo
(CEA Saclay)
What is the CFT dual of BPS black hole microstates?
11/22 Yusuke Taki
(Yukawa Institute)
Pseudo Entropy in dS/CFT and Time-like Entanglement Entropy
11/15 Satoshi Iso
Complementarity and Propagation of Decoherence in relativistic quantum measurements
11/11 Pierre Heidmann
(Johns Hopkins U)
Schwarzschild-like Topological Solitons in Gravity
11/1 Yuta Hamada
Swampland Conjectures
10/18 David Dudal
(KU Leuven)
Looking beyond the Landau gauge Gribov horizon
10/4 Hitoshi Murayama
(Berkeley, Kavli-IPMU)
Solving strong dynamics of gauge theories using supersymmetry and anomaly mediation
7/26 Norihiro Iizuka
(Osaka Univ.)
Defining entanglement without tensor factoring: a Euclidean hourglass prescription
7/11 Shinji Mukohyama
On the assumptions leading to the information loss paradox
7/4 Muneto Nitta
(Keio University)
Stable Z-strings with topological polarization in two Higgs doublet model (with a review of topological solitons in this model)
6/28 Ryosuke Sato
(Osaka Univ.)
Spontaneous CP violation & Baryon asymmetry
6/21 Masazumi Honda
(YITP, Kyoto U)
String theory, N=4 SYM and Riemann hypothesis
6/14 Mitsuhiro Nishida
Scaling exponents of Mellin amplitudes for deriving bounds on flat space S-matrices from bounds on chaos
6/6 Satoshi Mishima
New physics interpretation of W-boson mass anomaly
5/30 Kantaro Ohmori
(University of Tokyo)
Non-invertible symmetry in 3+1-dimensions
5/24 Takashi Kaneko
(KEK and KMI)
$B \to D^*\ell\nu$ decay on the lattice
5/23 Shuhei Iguro
(Karlsruhe Institute of Technology)
Collider test of the Lepton portal to sub-GeV dark matter
5/16 Yohei Ema
(Minnesota University)
CKM and muon EDM contributions to atomic/molecular EDMs
5/10 Wen Yin
(Tohoku University)
Implications of Hubble tensions for very early universe cosmology
5/1 example
4/26 Kenta Suzuki
(Yukawa Inst.)
JT Gravity Limit of Liouville CFT and Matrix Model
4/18 Volodymyr Takhistov
Exploring Fundamental Physics with Atmospheric Collider and Beyond
4/12 Masamichi Miyaji
(Nagoya U)
Probing Gravity using Correlation Measures
4/11 Sinya Aoki
(YITP, Kyoto U)
Conserved non-Noether charge in general relativity: Physical definition vs. Noether's 2nd theorem
2/8 Juan Carlos Vasquez
(Univ. of Massachusetts, Amherst)
The QCD Adler function and the muon g-2 anomaly from Renormalons
2/2 Tatsuma Nishioka
(Yukawa Institute)
CFT duals of three-dimensional de Sitter gravity
1/18 Shohei Okawa
(Universitat de Barcelona)
Long-range axion forces and hadronic CP violation
1/11 Dorin Weissman
Hard scattering and holographic QCD
Date Speaker Title Slide/Video
12/22 Toshifumi Noumi
(Kobe Univ.)
Gravitational Positivity Bounds and the Standard Model
12/21 Amon Furuichi
12/15 Kazushi Yamashiro
(Shizuoka University)
Target space entanglement in a matrix model for the bubbling geometry
12/14 Yukihiro Kanda
12/7 Hiromasa Takaura
Perturbative computation of the electron g-2 using stochastic method
11/30 Shota Komatsu
Three tales of de Sitter
11/17 Juntaro Wada
(Univ. of Tokyo)
Probing the Lμ-Lτ Gauge Boson at the MUonE Experiment
11/9 Jiro Soda
(Kobe University)
Decoherence induced by gravitons
11/2 Yuki Hayashi
(Tohoku Univ.)
Renormalon subtraction using Fourier transform — towards precise QCD calculation
10/27 Yu Zhang
Correlated Dirac Eigenvalues and Axial Anomaly in Chiral Symmetric QCD
10/19 Abhiram Kidambi
Towards localization of 1/4-BPS black holes in N = 4 supergravity: Lessons from the microscopic side
10/12 Kei Yagyu
(Osaka Univ.)
Dark sector as origin of tiny lepton masses and new sources of (g-2)_mu
10/5 Minoru Eto
(Yamagata Univ.)
Non-Abelian vortices and magnetic monopoles in 2 Higgs doublet model
7/20 Satoshi Yamaguchi
(Osaka University)
Supersymmetric quantum field theory with exotic symmetry in 3+1 dimensions and fermionic fracton phases
7/13 Kantaro Ohmori
(Univ. of Tokyo)
Symmetries and Strings of Adjoint QCD2
7/7 Takeshi Kobayashi
(Nagoya Univ.)
6/29 Kin-ya Oda
(Tokyo Woman's Christian U.)
Dynamically emergent gravity from hidden local Lorentz symmetry
6/22 Shoji Hashimoto
Inclusive processes from lattice QCD
6/15 Simon Ross
(Durham U)
AdS solitons with magnetic flux - degenerate supersymmetric solutions
6/8 Kyohei Mukaida
Baryo/Leptogenesis from Axion Inflation
6/1 Lento Nagano
(ICEPP, U of Tokyo)
Digital quantum simulation for screening and confinement in gauge theory with a topological term
5/25 Yuichiro Tada
(Nagoya Univ. C-lab)
Self-introduction, or a biased view of what theoretical cosmologists are recently interested in
5/17 Hiroshi Suzuki
(Kyushu U)
Gradient flow exact renormalization group
5/12 Qaisar Shafi
(Bartol research institute)
Topological Structures in Unified Theories
5/10 Tomohiro Fujita
(Waseda Univ.)
Hunting Axion like Particles by Observations and Experiments
4/28 Masamichi Miyaji
(UC Berkley)
Spectrum of End of the World Branes in Holographic BCFTs
4/19 Wen Yin
(Tohoku Univ.)
Kilobyte cosmic birefringence and ALP domain walls without strings
4/13 Sotaro Sugishita
(Nagoya U)
IR finite S-matrix by gauge invariant dressed states
2/24 Yoshiki Yatagai
(Osaka City U.)
Fermion Mass Hierarchy in Grand Gauge-Higgs Unification with Localized Gauge Kinetic Terms
2/10 Yu Hamada
(Kyoto Univ.)
Gravitational instantons and anomalous chiral symmetry breaking
2/3 Norihiro Iizuka
(Osaka U)
Wormholes and holographic decoherence
1/26 ‪Martin Jung
(INFN Torino)
Standard Model predictions and new physics in b to c transitions
1/20 Kazunori Nakayama
(Univ. of Tokyo)
Condensed matter physics for dark matter detection
1/13 Kazuhisa Ogawa
(Hokkaido U)
Complex "variance" in quantum measurement for pre- and post-selected systems
Date Speaker Title Slide/Video
12/15 Yosuke Takubo
12/11 Kaori Fuyuto
(Los Alamos)
Fundamental symmetry tests in the lepton sector
12/2 Naoki Sasakura
(YITP, Kyoto U)
Exploring quantum canonical tensor model for N = 1 and beyond
11/18 Masashi Aiko
(Osaka Univ.)
New scenario for aligned Higgs couplings originated from the twisted custodial symmetry at high energies
11/4 Daisuke Kadoh
(NCTS, National Tsing-Hua Univ.)
Tensor renormalization group on triad networks
10/28 Seishi Enomoto
(Sun Yat-sen University)
Matter-antimatter asymmetric production due to oscillating background field
10/21 Kazumi Okuyama
(Shinshu U)
Quenched free energy in random matrix model
10/7 Takumi Kuwahara
(IBS -> Peking U.)
Maximally self-interacting dark matter: A composite asymmetric dark matter scenario
7/27 Shuichi Yokoyama
(YITP Kyoto)
Flow equation, black hole, and singularity
7/21 Kunimasa Miyazaki
(Nagoya U)
Anomalous and Glassy Dynamics of a Simple Active Matter
7/16 Masaaki Tomii
(Connecticut U.)
Direct CP violation and the \Delta I = 1/2 rule in K \to \pi\pi decay from the Standard Model
7/7 Kohtaroh Miura
(GSI Helmholts-Institute Mainz)
Lattice QCD Precision Science for Muon g-2 and Running alpha
6/29 Hiroshi Ohki
(Nara Women's university)
Progress on the nucleon EDM calculations in lattice QCD
6/22 So Chigusa
6/15 Dorin Weissman
The quantization of folded strings in non-critical dimensions
6/8 Tatsuo Kobayashi
(Hokkaido Univ.)
Modular flavor symmetry
6/1 Tomonori Ugajin
(YITP Kyoto)
Entanglement between two disjoint universes
5/25 Teppei Kitahara
(Nagoya U)
Novel approach to neutron electric dipole moment search using weak measurement
5/18 Chang-Tse Hsieh
Anomaly of the Electromagnetic Duality of Maxwell Theory
5/11 Hidehiko Shimada
Bose-Einstein Condensation and large-N colour confinement
4/27 Shohei Okawa
(University of Victoria)
Lepton Portal Dark Matter: current status and muon g-2 explanation
4/20 Shuhei Iguro
(Nagoya Univ.)
Testing the 2HDM explanation of the muon g-2 anomaly at the LHC
2/21 Takahiro Nishinaka
(Ritsumeikan U)
Peculiar index relation for Argyres-Douglas theories
1/15 Soichiro Hashiba
(Tokyo U., RESCEU)
Gravitational production of right-handed neutrino after quintessential inflation
1/8 Shinji Hirano
(Wits University, South Africa)
Nearly AdS2 holography in quantum CGHS model
Date Speaker Title Slide/Video
12/18 Teruyuki Kitabayashi
(Tokai University)
Clockwork origin of neutrino mixings
12/4 Shintaro Eijima
Probing leptogenesis in the nuMSM
11/26 Yutaka Hosotani
(Osaka University)
CKM matrix and FCNC suppression in SO(5)×U(1)×SU(3) gauge-Higgs unification
11/19 Takeshi Kobayashi
(KMI (Nagoya University))
To B or not to B: Primordial magnetic fields from Weyl anomaly and Beyond
11/14 Ryo Yokokura
Topological order in the color-flavor locked phase of (3+1)-dimensional U(N) gauge-Higgs system
11/5 Teppei Kitahara
Hunt for new physics in kaon decays and recent KOTO result
10/23 Seyed Morteza Hosseini
(Kavli IPMU)
A story of gravitational blocks and QFT indices
10/16 Kohei Kamada
(University of Tokyo, RESCEU)
Cosmological Magnetic Fields Meets Chiral Anomaly
8/9 Keita Nii
(AEC, University of Bern)
Seiberg ``N-ality
7/19 Junichiro Kawamura
(Ohio State University)
Complete Vector-like Fourth Family and new U(1) for Muon Anomalies
7/5 Yuho Sakatani
(Kyoto Pref U Med)
Type II DFT solutions from Poisson-Lie T-duality/plurality
7/2 Shinji Hirano
(University of the Witwatersrand, South Africa)
Information transfer and black hole evaporation via traversable BTZ wormholes
6/28 Toshifumi Noumi
(Kobe Univ.)
Primordial non-Gaussianities as a particle collider
6/21 Keisuke Yanagi
(Univ. of Tokyo)
Dark Matter Heating vs. Rotochemical Heating in Old Neutron Stars
6/14 Katsushi Ito
(Tokyo Institute of Technology)
TBA equations and resurgent Quantum Mechanics
6/11 Ayuki Kamada
(IBS, Korea)
Composite asymmetric dark matter and galactic rotation curves
6/7 Nobuhito Maru
(Osaka City University)
Lecture: Basics of Gauge-Higgs Unification
6/7 Nobuhito Maru
(Osaka City University)
Dark Matter in Gauge-Higgs Unification
6/4 Yoshihiro Shigekami
(Huazhong U of Science and Technology)
(g-2)_{mu} Versus Flavor Changing Neutral Current Induced by the Light (B-L)_{mu tau} Boson
5/24 Ken Shiozaki
Fermionic partial transpose and non-local order parameters for SPT phases of fermions
5/17 Keiko Nagao
(Okayama University of Science)
Dark matter mass and distribution by directional
4/26 Koji Umemoto
Aspects of Holographic Entanglement of Purification Conjecture
4/23 Michihisa Takeuchi
New Physics searches at the LHC and beyond