Neuromodulation in neural organoids with shell MEAs

Kavli Affiliate: Brian Caffo | Authors: Chris Acha, Derosh George, Lauren C. Diaz, Ziwei Ouyang, Dowlette-Mary M. Alam El Din, Hrishikesh Surlekar, Babak Moghadas, Pratyush Sai R. Rayasam, Yu-Chiao Lai, Lena Smirnova, Brian S. Caffo, Erik C. Johnson and David H. Gracias | Summary: Neural organoids (NOs) have emerged as important tissue engineering models for […]


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One-loop Renormalization of BPS String Masses in Pseudo-anomalous Heterotic String

Kavli Affiliate: Jeffrey Harvey | Summary:Compactification of heterotic string on a Calabi-Yau threefold can lead to a four-dimensional low-energy effective theory which contains a $U(1)$ gauge theory which is pseudo-anomalous, meaning that the fermion content is anomalous, but that the fermion anomaly is cancelled by a four-dimensional version of the Green-Schwarz mechanism involving a shift […]


Continue.. One-loop Renormalization of BPS String Masses in Pseudo-anomalous Heterotic String

One-loop Renormalization of BPS String Masses in Pseudo-anomalous Heterotic String

Kavli Affiliate: Jeffrey A. Harvey | First 5 Authors: Jeffrey A. Harvey, Tai Wai Hu, , , | Summary: Compactification of heterotic string on a Calabi-Yau threefold can lead to a four-dimensional low-energy effective theory which contains a $U(1)$ gauge theory which is pseudo-anomalous, meaning that the fermion content is anomalous, but that the fermion […]


Continue.. One-loop Renormalization of BPS String Masses in Pseudo-anomalous Heterotic String

One-loop Renormalization of BPS String Masses in Pseudo-anomalous Heterotic String

Kavli Affiliate: Jeffrey A. Harvey | First 5 Authors: Jeffrey A. Harvey, Tai Wai Hu, , , | Summary: Compactification of heterotic string on a Calabi-Yau threefold can lead to a four-dimensional low-energy effective theory which contains a $U(1)$ gauge theory which is pseudo-anomalous, meaning that the fermion content is anomalous, but that the fermion […]


Continue.. One-loop Renormalization of BPS String Masses in Pseudo-anomalous Heterotic String

Orbital Wigner functions and quantum transport in multiband systems

Kavli Affiliate: Joel Moore | Summary:Traditional theories of electron transport in crystals are based on the Boltzmann equation and do not capture physics arising from quantum coherence. We introduce a transport formalism based on orbital Wigner functions, which accurately captures quantum coherent physics in multiband fermionic systems. We illustrate the power of this approach compared […]


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Orbital Wigner functions and quantum transport in multiband systems

Kavli Affiliate: Joel E. Moore | First 5 Authors: Johannes Mitscherling, Dan S. Borgnia, SuryaNeil Ahuja, Joel E. Moore, Vir B. Bulchandani | Summary: Traditional theories of electron transport in crystals are based on the Boltzmann equation and do not capture physics arising from quantum coherence. We introduce a transport formalism based on ”orbital Wigner […]


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The Computational Advantage of Depth: Learning High-Dimensional Hierarchical Functions with Gradient Descent

Kavli Affiliate: Paul L. Schechter | First 5 Authors: Yatin Dandi, Yatin Dandi, , , | Summary: Understanding the advantages of deep neural networks trained by gradient descent (GD) compared to shallow models remains an open theoretical challenge. In this paper, we introduce a class of target functions (single and multi-index Gaussian hierarchical targets) that […]


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Characterization of a TES-based Anti-Coincidence Detector for Future Large Field-of-View X-ray Calorimetry Missions

Kavli Affiliate: Noah Kurinsky | Summary:Microcalorimeter instruments aboard future X-ray observatories will require an anti-coincidence (anti-co) detector to veto charged particle events and reduce the non-X-ray background. We have developed a large-format, TES-based prototype anti-coincidence detector that is particularly suitable for use with spatially-extended (~ 10 cm^2}) TES microcalorimeter arrays, as would be used for […]


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NVR: Vector Runahead on NPUs for Sparse Memory Access

Kavli Affiliate: Jing Wang | First 5 Authors: Hui Wang, Zhengpeng Zhao, Jing Wang, Yushu Du, Yuan Cheng | Summary: Deep Neural Networks are increasingly leveraging sparsity to reduce the scaling up of model parameter size. However, reducing wall-clock time through sparsity and pruning remains challenging due to irregular memory access patterns, leading to frequent […]


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Spiral resonator referenced on-chip low noise microwave generation

Kavli Affiliate: Kerry Vahala | Summary:In recent years, miniaturization and integration of photonic microwave oscillators by optical frequency division approach have witnessed rapid progress. In this work, we report on-chip low phase noise photonic microwave generation based on a planar chip design. Dual lasers are co-locked to a silicon nitride spiral resonator and their relative […]


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