Defect CFT in the 6d (2,0) theory from M2 brane dynamics in AdS$_7 times$S$^4$

Kavli Affiliate: Xinan Zhou | First 5 Authors: Nadav Drukker, Simone Giombi, Arkady A. Tseytlin, Xinan Zhou, | Summary: Surface operators in the 6d (2,0) theory at large $N$ have a holographic description in terms of M2 branes probing the AdS$_7 times S^4$ M-theory background. The most symmetric, 1/2-BPS, operator is defined over a planar […]


Continue.. Defect CFT in the 6d (2,0) theory from M2 brane dynamics in AdS$_7 times$S$^4$

Conformal invariance and quantum non-locality in critical hybrid circuits

Kavli Affiliate: Matthew P. A. Fisher | First 5 Authors: Yaodong Li, Xiao Chen, Andreas W. W. Ludwig, Matthew P. A. Fisher, | Summary: We establish the emergence of a conformal field theory (CFT) in a (1+1)-dimensional hybrid quantum circuit right at the measurement-driven entanglement transition by revealing space-time conformal covariance of entanglement entropies and […]


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Efficient unitary designs with a system-size independent number of non-Clifford gates

Kavli Affiliate: David Gross | First 5 Authors: Jonas Haferkamp, Felipe Montealegre-Mora, Markus Heinrich, Jens Eisert, David Gross | Summary: Many quantum information protocols require the implementation of random unitaries. Because it takes exponential resources to produce Haar-random unitaries drawn from the full $n$-qubit group, one often resorts to $t$-designs. Unitary $t$-designs mimic the Haar-measure […]


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Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Kavli Affiliate: David J. Gross | First 5 Authors: David J. Gross, Jorrit Kruthoff, Andrew Rolph, Edgar Shaghoulian, | Summary: Motivated by $Tbar T$, we introduce and study a wide class of solvable deformations of quantum-mechanical theories. These deformations map the Hamiltonian to a function of itself. We solve these theories by computing all finite-temperature […]


Continue.. Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Kavli Affiliate: David J. Gross | First 5 Authors: David J. Gross, Jorrit Kruthoff, Andrew Rolph, Edgar Shaghoulian, | Summary: Motivated by $Tbar T$, we introduce and study a wide class of solvable deformations of quantum-mechanical theories. These deformations map the Hamiltonian to a function of itself. We solve these theories by computing all finite-temperature […]


Continue.. Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Generalized Lieb-Schultz-Mattis theorem on bosonic symmetry protected topological phases

Kavli Affiliate: Shenghan Jiang | First 5 Authors: Shenghan Jiang, Meng Cheng, Yang Qi, Yuan-Ming Lu, | Summary: We propose and prove a family of generalized Lieb-Schultz-Mattis (LSM) theorems for symmetry protected topological (SPT) phases on boson/spin models in any dimensions. The "conventional" LSM theorem, applicable to e.g. any translation invariant system with an odd […]


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$Toverline{T}$ in AdS$_2$ and Quantum Mechanics

Kavli Affiliate: David J. Gross | First 5 Authors: David J. Gross, Jorrit Kruthoff, Andrew Rolph, Edgar Shaghoulian, | Summary: Quantum field theory in zero spatial dimensions has a rich infrared landscape and a universal ultraviolet, inverting the usual Wilsonian paradigm. For holographic theories this implies a rich landscape of asymptotically AdS$_2$ geometries. Isolating the […]


Continue.. $Toverline{T}$ in AdS$_2$ and Quantum Mechanics

$Toverline{T}$ in AdS$_2$ and Quantum Mechanics

Kavli Affiliate: David J. Gross | First 5 Authors: David J. Gross, Jorrit Kruthoff, Andrew Rolph, Edgar Shaghoulian, | Summary: Quantum field theory in zero spatial dimensions has a rich infrared landscape and a universal ultraviolet, inverting the usual Wilsonian paradigm. For holographic theories this implies a rich landscape of asymptotically AdS$_2$ geometries. Isolating the […]


Continue.. $Toverline{T}$ in AdS$_2$ and Quantum Mechanics

Spontaneous Domain Formation in Spherically-Confined Elastic Filaments

Kavli Affiliate: Rudolf Podgornik | First 5 Authors: Tine Curk, James Daniel Farrell, Jure Dobnikar, Rudolf Podgornik, | Summary: Although the free energy of a genome packing into a virus is dominated by DNA-DNA interactions, ordering of the DNA inside the capsid is elasticity-driven, suggesting general solutions with DNA organized into spool-like domains. Using analytical […]


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Diffraction limited centimeter scale radiator: metasurface grating antenna for phased array LiDAR

Kavli Affiliate: Larry Coldren | First 5 Authors: Weiqiang Xie, Jinxi Huang, Tin Komljenovic, Larry Coldren, John Bowers | Summary: In this paper, we demonstrate a radiation-strength-chirped metasurface centimeter-long grating antenna, whose beam quality is approaching the diffraction limit in its footprint with 90 percent efficiency.Instead of chirping the duty cycle to tune radiation strength, […]


Continue.. Diffraction limited centimeter scale radiator: metasurface grating antenna for phased array LiDAR