Topological modular forms and the absence of a heterotic global anomaly

Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Yuji Tachikawa, , , , | Summary: Spacetime theories obtained from perturbative string theory constructions are automatically free of perturbative anomalies, but it is not settled whether they are always free of global anomalies. Here we discuss a possible $mathbb{Z}_{24}$-valued pure gravitational anomaly of heterotic compactifications down […]


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Unified approach to secondary effects on the CMB B-mode polarization

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Toshiya Namikawa, Atsushi Naruko, Ryo Saito, Atsushi Taruya, Daisuke Yamauchi | Summary: We develop a systematic and unified approach to estimate all possible secondary (i.e. non-primordial) nonlinear effects to the cosmic microwave background (CMB) polarization, named curve-of-sight integration approach. In this approach, the Boltzmann equation for polarized […]


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On the exponentially small corrections to ${cal N} = 2$ superconformal correlators at large R-charge

Kavli Affiliate: Simeon Hellerman | First 5 Authors: Simeon Hellerman, , , , | Summary: In this note we consider Coulomb-branch chiral primary correlation functions in ${cal N} = 2$ superconformal QCD with gauge group $SU(2)$, in the limit of large R-charge ${cal J} = 2n$ for the chiral primary operators $[{cal O}(x)]^ n$ with […]


Continue.. On the exponentially small corrections to ${cal N} = 2$ superconformal correlators at large R-charge

Non-unitary TQFTs from 3D $mathcal{N}=4$ rank 0 SCFTs

Kavli Affiliate: Masahito Yamazaki | First 5 Authors: Dongmin Gang, Sungjoon Kim, Kimyeong Lee, Myungbo Shim, Masahito Yamazaki | Summary: We propose a novel procedure of assigning a pair of non-unitary topological quantum field theories (TQFTs), TFT$_pm [mathcal{T}_{rm rank ;0}]$, to a (2+1)D interacting $mathcal{N}=4$ superconformal field theory (SCFT) $mathcal{T}_{rm rank ;0}$ of rank 0, […]


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An Information Paradox and Its Resolution in de Sitter Holography

Kavli Affiliate: Yasunori Nomura | First 5 Authors: Hao Geng, Yasunori Nomura, Hao-Yu Sun, , | Summary: We formulate a version of the information paradox in de Sitter spacetime and show that it is solved by the emergence of entanglement islands in the context of the DS/dS correspondence; in particular, the entanglement entropy of a […]


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Picosecond Laser Ablation of Millimeter-Wave Subwavelength Structures on Alumina and Sapphire

Kavli Affiliate: Tomotake Matsumura | First 5 Authors: Qi Wen, Elena Fadeeva, Shaul Hanany, Jürgen Koch, Tomotake Matsumura | Summary: We use a 1030 nm laser with 7 ps pulse duration and average power up to 100 W to ablate pyramid-shape subwavelength structures (SWS) on alumina and sapphire. The SWS give an effective and cryogenically […]


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Large R-charge EFT correlators in N=2 SQCD

Kavli Affiliate: Simeon Hellerman | First 5 Authors: Simeon Hellerman, Domenico Orlando, , , | Summary: We consider large-R-charge Coulomb branch correlation functions in $mathcal{N} = 2$ superconformal QCD in D=4 dimensions, with gauge group $SU(2)$ and $N_f = 4$ hypermultiplets in the fundamental representation. Using information from supersymmetric recursion relations, S-duality, and matching of […]


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The Atacama Cosmology Telescope: Summary of DR4 and DR5 Data Products and Data Access

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Maya Mallaby-Kay, Zachary Atkins, Simone Aiola, Stefania Amodeo, Jason E. Austermann | Summary: Two recent large data releases for the Atacama Cosmology Telescope (ACT), called DR4 and DR5, are available for public access. These data include temperature and polarization maps that cover nearly half the sky at […]


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Dynamical Evolution of Voids with Surrounding Gravitational Tidal Field

Kavli Affiliate: Naoshi Sugiyama | First 5 Authors: Mutsumi Minoguchi, Atsushi J. Nishizawa, Tsutomu T. Takeuchi, Naoshi Sugiyama, | Summary: The void ellipticity distribution today can be well explained by the tidal field. Going a step further from the overall distribution, we investigate individuality on the tidal response of void shape in non-linear dynamical evolution. […]


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Fermionization and boundary states in 1+1 dimensions

Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Yoshiki Fukusumi, Yuji Tachikawa, Yunqin Zheng, , | Summary: In the last few years it was realized that every fermionic theory in 1+1 dimensions is a generalized Jordan-Wigner transform of a bosonic theory with a non-anomalous $mathbb{Z}_2$ symmetry. In this note we determine how the boundary states […]


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